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.
%I A107853 #21 Mar 14 2024 15:19:57
%S A107853 0,1,2,1,2,3,2,7,10,13,26,33,50,83,114,183,282,413,650,977,1474,2275,
%T A107853 3426,5223,7978,12077,18426,28033,42578,64883,98642,150039,228410,
%U A107853 347325,528490,804145,1223138,1861123,2831426,4307399,6553674,9970253
%N A107853 Expansion of g.f. x*(x-1)*(x+1)^3/((2*x^3+x^2-1)*(x^4+1)).
%C A107853 Floretion Algebra Multiplication Program, FAMP Code: - 2basejforzapseq[(.5i' + .5j' + .5'ki' + .5'kj')*(.5'i + .5'j + .5'ik' + .5'jk')], 1vesforzap = A000004
%H A107853 <a href="/index/Rec#order_07">Index entries for linear recurrences with constant coefficients</a>, signature (0,1,2,-1,0,1,2).
%F A107853 a(n) = 2*A159287(n) + A091337(n+6).
%t A107853 LinearRecurrence[{0,1,2,-1,0,1,2},{0,1,2,1,2,3,2},50] (* _Harvey P. Dale_, Jan 24 2018 *)
%Y A107853 Cf. A107849, A107850, A107851, A107852, A107854.
%K A107853 easy,nonn
%O A107853 0,3
%A A107853 _Creighton Dement_, May 25 2005