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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.

A183131 a(n) = 3^(n^2+n) * C(n-1 + 1/3^n, n).

Table of values

n a(n)
0 1
1 3
2 45
3 6930
4 11006901
5 170914738743
6 25094213868636459
7 34223931232325024404500
8 429380124224154112727394224229
9 49276413396437070036301200874674619650
10 51540221234153816900126405027724655190954838780

List of values

[1, 3, 45, 6930, 11006901, 170914738743, 25094213868636459, 34223931232325024404500, 429380124224154112727394224229, 49276413396437070036301200874674619650, 51540221234153816900126405027724655190954838780]

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

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