What are the PARI/GP alternatives to contfrac() ?

Ralf Stephan ralf at ark.in-berlin.de
Sat Dec 29 18:56:39 CET 2007


>   D. CAROLO FRIDERICO GAVSS

Until the year 1901, the German language used
a lot of C's where you would find a K today. Then there
came a writing reform and in the frenzy of changing C to K
they also changed names of well known persons, which should
have been a no-no, IMHO.

But that's the time when it probably happened.


ralf





Dear Seqfans,   I wish people (and programs) would
not use the notation A/B/C.  Please use  A/(BC).

Another horror is 1/3A when you mean A/3.  Use (1/3)A.
I was taught that 1/AB is the same as 1/(AB).

Neil



Dear Friends,  I was trying to understand this entry.
I have made a guess at the definition - is it correct? (See the 
first Comment line).  Thanks!  Neil


%I A053686
%S A053686 2,4,6,14,34,36,52,86,132,154,250,252,258
%N A053686 Record gaps between consecutive primes that repeat at least once before a new record occurs.
%C A053686 I assume this means: scan the sequence of prime differences (A001223) looking for new records, but append the record difference to the present sequence only if the difference appears at least twice in A001223 before it is beaten by a new record.  - njas, Dec 30 2007
%C A053686 If this interpretation is correct, then the sequence of primes where these gaps first appear, 3, 7, 23, 113, ..., should be added to the OEIS.
%C A053686 Next gap occurs between two primes greater than 10000000000. - Sam Handler (sam_5_5_5_0(AT)yahoo.com), Sep 13 2006
%Y A053686 Cf. A001223, A053695.
%K A053686 more,nonn
%O A053686 1,1
%A A053686 Jeff Burch (gburch(AT)erols.com), Mar 23 2000
%E A053686 More terms from Naohiro Nomoto (6284968128(AT)geocities.co.jp), Jul 23 2001
%E A053686 Corrected by Jorge Coveiro (jorgecoveiro(AT)yahoo.com), Jul 24 2006
%E A053686 More terms from Sam Handler (sam_5_5_5_0(AT)yahoo.com), Sep 13 2006






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