Sequences that pass recursion test, but ...
Tanya Khovanova
tanyakh at TanyaKhovanova.com
Sun Mar 4 23:04:29 CET 2007
The complement sequence is A088472 which starts 1, 2, 3, 4, 5, 6, 7, 8, 9, 100, 110, 112...
All the sequences A088472-A088481 could have the same correction to their definition.
Martin Fuller
PS Has something happened to sequences A087637 and A087639? They are referenced by A087097 "Dismal
primes" but appear to be unrelated.
--- Tanya Khovanova <tanyakh at TanyaKhovanova.com> wrote:
> Hello all,
>
> With the corrected definition of A088475 (Numbers n such that dismal sum of the dismal prime
> divisors of n is >= n) can someone comment on the fact that it looks like arithmetic
> progression.
>
> You should also correct this:
> A088480 Numbers n such that dismal product of prime divisors of n is >= n.
>
> Tanya
>
> ---------- Original Message ----------------------------------
> From: "N. J. A. Sloane" <njas at research.att.com>
> Reply-To: njas at research.att.com
> Date: Sun, 4 Mar 2007 10:40:38 -0500 (EST)
>
> >New version:
> >
> >%I A088475
> >%S A088475 10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,
> >%T A088475 32,33,34,35,36,37,38,39,40,41,42,43,44,45,46,47,48,49,50,51,52,53,
> >%U A088475 54,55,56,57,58,59,60,61,62,63,64,65,66,67,68,69,70,71,72,73,74,75
> >%N A088475 Numbers n such that dismal sum of the dismal prime divisors of n is >= n.
> >%e A088475 The only dismal prime that divides 10 is 90: 90*1 = 10 (cf. A087061, A087062, A08\
> >7097), and 90+1 = 91 >= 10, so 10 is a member. - njas, Mar 04 2007
> >%H A088475 D. Applegate, <a href="http://www.research.att.com/~njas/sequences/a087061.txt">C\
> > program for dismal arithmetic and number theory</a>
> >%H A088475 <a href="http://www.research.att.com/~njas/sequences/Sindx_Di.html#dismal">Index \
> >entries for sequences related to dismal arithmetic</a>
> >%Y A088475 Sequence in context: A063671 A123895 A100830 this_sequence A001637 A102494 A11788\
> >4
> >%Y A088475 Adjacent sequences: A088472 A088473 A088474 this_sequence A088476 A088477 A088478
> >%K A088475 nonn,base
> >%O A088475 1,1
> >%A A088475 David Applegate (david(AT)research.att.com), Nov 11 2003
> >%E A088475 Definition made more precise by Marc LeBrun, Mar 04 2007
> >
> >Neil
> >
>
>
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