Mistake? A038853 and A038860

Tanya Khovanova tanyakh at TanyaKhovanova.com
Thu May 31 21:26:06 CEST 2007


Definitely, any number of the form 5(3k(k+5)+25) = (k+5)^3-k^3
should be in that sequence, and 1385 is of that form.
M.H.

On 5/31/07, Tanya Khovanova <tanyakh at tanyakhovanova.com> wrote:
> Hello Seqfans,
>
> Looking at the definitions, A038860 should be a subsequence of A038853; but 1385 is missing in A038853.
>
> A038853                  Numbers that are divisible by 5 and are differences between two cubes in at least one way.
>         215, 335, 485, 665, 875, 1115, 1330, 1685, 2015, 2170, 2375, 2680, 2765, 3150, 3185, 3635, 3880, 4095, 4115, 4570, 4625, 4905, 5165, 5320, 5735, 5805, 6130, 6335, 6795, 6965, 7000, 7625, 7875, 7930, 8315, 8920, 9035, 9045, 9260, 9785, 9970, 10305
>
> A038860                  Numbers n such that n ends with '5' and is difference between two cubes in at least one way.
>         215, 335, 485, 665, 875, 1115, 1385, 1685, 2015, 2375, 2765, 3185, 3635, 4095, 4115, 4625, 4905, 5165, 5735, 5805, 6335, 6795, 6965, 7625, 7875, 8315, 9035, 9045, 9785, 10305, 10565, 11375, 11655, 12215, 13085, 13095, 13985, 14625, 14915, 15875
>
> Tanya
>
>
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Max said:


how should I format my changes if I want to modify or delete an
existing comment ?

Me:

Something like this would work

%I A123456
%S A123456 1 4 16 64 256 ...
%C A123456 Please replace the comment
%C A123456 (bad comment)
%C A123456 by
%C A123456 Good comment
%A A123456 Max ......................


I was wrong when I said %C lines get mushed together.
They don't when you send me email.
They do if you use the on-line web form

Neil








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