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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.

A254157 a(n) = binomial(3*n,n)^n.

Table of values

n a(n)
0 1
1 3
2 225
3 592704
4 60037250625
5 244217432431215243
6 40928832685064366701940736
7 287432029715751041166252933120000000
8 85609985515193235253656684862285741981771256961
9 1091210761769150876962680951989752349788052377750396728515625

List of values

[1, 3, 225, 592704, 60037250625, 244217432431215243, 40928832685064366701940736, 287432029715751041166252933120000000, 85609985515193235253656684862285741981771256961, 1091210761769150876962680951989752349788052377750396728515625]

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

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