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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.

A124862 a(n)=J(2n+1)*C(2n,n), J(n)=A001045(n).

Table of values

n a(n)
0 1
1 6
2 66
3 860
4 11970
5 172116
6 2523444
7 37487736
8 562303170
9 8496977060
10 129153866556
11 1972531074696
12 30245473774516
13 465314970745800
14 7179145222818600
15 111037445957810160
16 1721080411744977090

List of values

[1, 6, 66, 860, 11970, 172116, 2523444, 37487736, 562303170, 8496977060, 129153866556, 1972531074696, 30245473774516, 465314970745800, 7179145222818600, 111037445957810160, 1721080411744977090]

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

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