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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.

A126154 a(n) = Sum_{k=0..n} C(2n,k)*A126150(n,k).

Table of values

n a(n)
0 1
1 10
2 420
3 38760
4 6274320
5 1574566560
6 566087814720
7 276000683679360
8 175277074975269120
9 140576092830146972160
10 138951226585459200107520
11 165951785120565606919464960
12 235593066998837613695124049920

List of values

[1, 10, 420, 38760, 6274320, 1574566560, 566087814720, 276000683679360, 175277074975269120, 140576092830146972160, 138951226585459200107520, 165951785120565606919464960, 235593066998837613695124049920]

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

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