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.

A249925 G.f. satisfies: A(x) = 1 + 2*x*A(x) + 5*x^2*A(x)^2.

Table of values

n a(n)
0 1
1 2
2 9
3 38
4 186
5 932
6 4889
7 26238
8 143966
9 802652
10 4536874
11 25932348
12 149650516
13 870675912
14 5101656889
15 30078478318
16 178309845686
17 1062198928812
18 6355149937934
19 38172142221748
20 230094601968876
21 1391444403490552
22 8439240940653834
23 51323083138005388
24 312896262064813036
25 1911980839096481432

List of values

[1, 2, 9, 38, 186, 932, 4889, 26238, 143966, 802652, 4536874, 25932348, 149650516, 870675912, 5101656889, 30078478318, 178309845686, 1062198928812, 6355149937934, 38172142221748, 230094601968876, 1391444403490552, 8439240940653834, 51323083138005388, 312896262064813036, 1911980839096481432]

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

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