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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.

A321608 G.f.: A(x) = Sum_{n>=0} x^n * (1+x)^(2*n^2) / A(x)^n.

Table of values

n a(n)
0 1
1 1
2 2
3 5
4 22
5 100
6 581
7 3716
8 26352
9 203664
10 1688485
11 14922599
12 139579911
13 1374581231
14 14194823072
15 153178320198
16 1722363891798
17 20130227813033
18 244028318224686
19 3062549991414408
20 39723783490631858
21 531726501000859625
22 7335052105035725087
23 104148717578191099492
24 1520349684313678309811
25 22793632534841442908565
26 350622445923759834928352
27 5528760266814203384425285

List of values

[1, 1, 2, 5, 22, 100, 581, 3716, 26352, 203664, 1688485, 14922599, 139579911, 1374581231, 14194823072, 153178320198, 1722363891798, 20130227813033, 244028318224686, 3062549991414408, 39723783490631858, 531726501000859625, 7335052105035725087, 104148717578191099492, 1520349684313678309811, 22793632534841442908565, 350622445923759834928352, 5528760266814203384425285]

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

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