cp's OEIS Frontend

This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.

A062122 Boustrophedon transform of 0, 1, 0, 2, 3, 5, 8, 13, 21, 34, 55, 89, 144,... the Fibonacci numbers (F_0 = 0, F_1 = 1, A000045) with an erroneous term (F_2 = 0 instead of 1).

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%I A062122 #16 Feb 17 2021 16:20:34
%S A062122 0,1,2,5,19,65,259,1161,5927,33946,216090,1513051,11558614,95658445,
%T A062122 852571616,8141450460,82928132445,897492637757,10284508144797,
%U A062122 124399102620413,1583898570128385,21175164077080102,296571619014584968,4342477201229994035,66348164337987642924
%N A062122 Boustrophedon transform of 0, 1, 0, 2, 3, 5, 8, 13, 21, 34, 55, 89, 144,... the Fibonacci numbers (F_0 = 0, F_1 = 1, A000045) with an erroneous term (F_2 = 0 instead of 1).
%H A062122 C. A. Church and M. Bicknell, <a href="https://www.mathstat.dal.ca/FQ/Scanned/11-3/church.pdf">Exponential generating functions for Fibonacci identities</a>, Fibonacci Quarterly, 11(3) (1973), 275-281.
%H A062122 J. Millar, N. J. A. Sloane and N. E. Young, A new operation on sequences: the Boustrophedon transform, J. Combin. Theory, 17A (1996), 44-54 (<a href="http://neilsloane.com/doc/bous.txt">Abstract</a>, <a href="http://neilsloane.com/doc/bous.pdf">pdf</a>, <a href="http://neilsloane.com/doc/bous.ps">ps</a>).
%H A062122 N. J. A. Sloane, <a href="/transforms.txt">Transforms</a>.
%H A062122 <a href="/index/Bo#boustrophedon">Index entries for sequences related to boustrophedon transform</a>
%F A062122 E.g.f.: (sec(x) + tan(x))*((exp(a*x) - exp(b*x))/(a-b) - x^2/2), where a = (1 + sqrt(5))/2 and b = (1 - sqrt(5))/2. - _Petros Hadjicostas_, Feb 16 2021
%p A062122 read transforms; with(combinat, fibonacci): a := [0,1,0,seq(fibonacci(i),i=3..30)]: BOUS2(a);
%K A062122 nonn
%O A062122 0,3
%A A062122 Orleo Marinaro (KDNM21(AT)bipop.it), Jun 01 2001
%E A062122 Mar 31 2004: Thomas Sundquist noticed the original description was incorrect. Francisco Salinas was able to modify the description so as to produce the given sequence.