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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.

A381876 G.f. A(x) satisfies A(x) = C(x) / (1 - x*A(x))^3, where C(x) is the g.f. of A000108.

Table of values

n a(n)
0 1
1 4
2 23
3 156
4 1167
5 9311
6 77710
7 670294
8 5928183
9 53467931
10 489904745
11 4547296624
12 42667426369
13 404044679434
14 3856480309376
15 37062228265769
16 358330619946164
17 3482936427997599
18 34014454418349579
19 333598711996924548
20 3284326412065118717
21 32446900771699499147

List of values

[1, 4, 23, 156, 1167, 9311, 77710, 670294, 5928183, 53467931, 489904745, 4547296624, 42667426369, 404044679434, 3856480309376, 37062228265769, 358330619946164, 3482936427997599, 34014454418349579, 333598711996924548, 3284326412065118717, 32446900771699499147]

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

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