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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.

A384031 a(n) = [x^n] Product_{k=0..n} (1 + k*x)^4.

Table of values

n a(n)
0 1
1 4
2 62
3 1680
4 65446
5 3334800
6 210218956
7 15803243456
8 1380404187558
9 137419388080920
10 15359405910256580
11 1904647527097204032
12 259511601503239509004
13 38539384808775589973416
14 6195988524478342471690200
15 1072149116496356641327200000
16 198683315255720972000976370950

List of values

[1, 4, 62, 1680, 65446, 3334800, 210218956, 15803243456, 1380404187558, 137419388080920, 15359405910256580, 1904647527097204032, 259511601503239509004, 38539384808775589973416, 6195988524478342471690200, 1072149116496356641327200000, 198683315255720972000976370950]

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

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