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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.

A091144 a(n) = binomial(n^2, n)/(1+(n-1)*n).

Table of values

n a(n)
0 1
1 1
2 2
3 12
4 140
5 2530
6 62832
7 1997688
8 77652024
9 3573805950
10 190223180840
11 11502251937176
12 779092434772236
13 58448142042957576
14 4811642166029230560
15 431306008583779517040
16 41820546066482630185200

List of values

[1, 1, 2, 12, 140, 2530, 62832, 1997688, 77652024, 3573805950, 190223180840, 11502251937176, 779092434772236, 58448142042957576, 4811642166029230560, 431306008583779517040, 41820546066482630185200]

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

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