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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.

A184889 a(n) = (5^n/n!^2) * Product_{k=0..n-1} (10k+2)*(10k+3).

Table of values

n a(n)
0 1
1 30
2 5850
3 1644500
4 542685000
5 196017822000
6 75031266310000
7 29905319000700000
8 12279871614662437500
9 5159062111690898125000
10 2207046771381366217875000
11 958150139674902210123750000

List of values

[1, 30, 5850, 1644500, 542685000, 196017822000, 75031266310000, 29905319000700000, 12279871614662437500, 5159062111690898125000, 2207046771381366217875000, 958150139674902210123750000]

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

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