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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.

A188683 Alternate partial sums of binomial(3n,n)^2/(2n+1).

Table of values

n a(n)
0 1
1 2
2 43
3 965
4 26260
5 793559
6 25715833
7 875686727
8 30942995146
9 1125179561729
10 41860674073996
11 1586681151506804
12 61081201435584796
13 2382392690910289172
14 93969463115644112428
15 3742596382979058395348

List of values

[1, 2, 43, 965, 26260, 793559, 25715833, 875686727, 30942995146, 1125179561729, 41860674073996, 1586681151506804, 61081201435584796, 2382392690910289172, 93969463115644112428, 3742596382979058395348]

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

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