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.

A032043 "BFK" (reversible, size, unlabeled) transform of 2,2,2,2...

Original entry on oeis.org

1, 2, 2, 6, 6, 10, 34, 38, 62, 90, 306, 334, 574, 794, 1226, 3390, 4014, 6370, 9130, 13598, 18470, 48114, 55290, 88966, 123238, 184178, 245714, 358710, 771990, 937210, 1427698, 1992662, 2882894, 3895626, 5533314, 7318270, 14935246
Offset: 0

Views

Author

Keywords

Crossrefs

a(n) = (A032005(n) + 2)/2.

Programs

  • PARI
    seq(n)={apply(p->subst(serlaplace(p + polcoeff(p,1)), y, 1)/2, Vec(y-1+prod(k=1, n, 1 + 2*x^k*y + O(x*x^n))))} \\ Andrew Howroyd, Jun 21 2018

Extensions

a(0)=1 prepended by Andrew Howroyd, Jun 21 2018