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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.

A211891 G.f.: exp( Sum_{n>=1} 2 * Pell(n^2) * x^n/n ), where Pell(n) = A000129(n).

Table of values

n a(n)
0 1
1 2
2 14
3 682
4 236826
5 525175434
6 7101054148862
7 575978478770467714
8 277997363115795461721154
9 794462328877965002894838885122
10 13398419999037765629218732004567606814
11 1330302023374557034879527995005574743144202826

List of values

[1, 2, 14, 682, 236826, 525175434, 7101054148862, 575978478770467714, 277997363115795461721154, 794462328877965002894838885122, 13398419999037765629218732004567606814, 1330302023374557034879527995005574743144202826]

Started in 1964 by Neil J. A. Sloane | Maintained by The OEIS Foundation Inc.

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