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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.

A325154 G.f. A(x) satisfies: 1 = Sum_{n>=0} ((1+x)^(2*n-1) - A(x))^n.

Table of values

n a(n)
0 1
1 1
2 4
3 60
4 1349
5 40210
6 1470027
7 63225750
8 3116555468
9 172936040306
10 10661699020596
11 722933543336296
12 53476543241702021
13 4286318739039468220
14 370139507278333619231
15 34264675353237245461705
16 3385595826616475280589858
17 355676742010175185149150523
18 39592541401227701053287450374
19 4655516336942715288212969823798
20 576645913391345319618489456738288
21 75048370900002385430200781452328814

List of values

[1, 1, 4, 60, 1349, 40210, 1470027, 63225750, 3116555468, 172936040306, 10661699020596, 722933543336296, 53476543241702021, 4286318739039468220, 370139507278333619231, 34264675353237245461705, 3385595826616475280589858, 355676742010175185149150523, 39592541401227701053287450374, 4655516336942715288212969823798, 576645913391345319618489456738288, 75048370900002385430200781452328814]

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

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