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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.

A302608 a(n) = n! * [x^n] exp(n*x)*arctan(x).

Table of values

n a(n)
0 0
1 1
2 4
3 25
4 224
5 2649
6 38880
7 679449
8 13749248
9 315919665
10 8122432000
11 231002307449
12 7199799644160
13 244028744225993
14 8936047251296256
15 351569799174274425
16 14789182545666244608
17 662389019735008588129
18 31470659616611382460416
19 1580849762199983023572313

List of values

[0, 1, 4, 25, 224, 2649, 38880, 679449, 13749248, 315919665, 8122432000, 231002307449, 7199799644160, 244028744225993, 8936047251296256, 351569799174274425, 14789182545666244608, 662389019735008588129, 31470659616611382460416, 1580849762199983023572313]

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

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