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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.

A138356 Moment sequence of t^2 coefficient in det(tI-A) for random matrix A in USp(4).

Table of values

n a(n)
0 1
1 1
2 2
3 4
4 10
5 27
6 82
7 268
8 940
9 3476
10 13448
11 53968
12 223412
13 949535
14 4128594
15 18310972
16 82645012
17 378851428
18 1760998280
19 8288679056
20 39457907128
21 189784872428
22 921472827272
23 4512940614960
24 22279014978544
25 110797225212112

List of values

[1, 1, 2, 4, 10, 27, 82, 268, 940, 3476, 13448, 53968, 223412, 949535, 4128594, 18310972, 82645012, 378851428, 1760998280, 8288679056, 39457907128, 189784872428, 921472827272, 4512940614960, 22279014978544, 110797225212112]

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

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