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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.

A301585 G.f.: Sum_{n>=0} ((1+x)^(3*n) - 1)^n.

Table of values

n a(n)
0 1
1 3
2 39
3 910
4 29949
5 1271751
6 66116065
7 4066082856
8 288701376912
9 23240635243591
10 2091554595246705
11 208085119389952134
12 22676957610808295192
13 2686515300821612112411
14 343760257348413122290260
15 47248346582443326267328400
16 6942339982115290619799947901
17 1085919469129099832397573088863
18 180160797497273341662653292624309
19 31598815412054398239059538582525618

List of values

[1, 3, 39, 910, 29949, 1271751, 66116065, 4066082856, 288701376912, 23240635243591, 2091554595246705, 208085119389952134, 22676957610808295192, 2686515300821612112411, 343760257348413122290260, 47248346582443326267328400, 6942339982115290619799947901, 1085919469129099832397573088863, 180160797497273341662653292624309, 31598815412054398239059538582525618]

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

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