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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.

A306799 Expansion of e.g.f. (sec(x) + tan(x))*(BesselI(0,2*x) + BesselI(1,2*x)).

Table of values

n a(n)
0 1
1 2
2 5
3 14
4 43
5 151
6 597
7 2701
8 13795
9 79129
10 503693
11 3527292
12 26945081
13 222997659
14 1987492223
15 18979143358
16 193319844179
17 2092211006561
18 23974970862885
19 289995870991594
20 3692342091149853
21 49362977658760079
22 691359846917532235
23 10123067013673200297
24 154669070822937580645

List of values

[1, 2, 5, 14, 43, 151, 597, 2701, 13795, 79129, 503693, 3527292, 26945081, 222997659, 1987492223, 18979143358, 193319844179, 2092211006561, 23974970862885, 289995870991594, 3692342091149853, 49362977658760079, 691359846917532235, 10123067013673200297, 154669070822937580645]

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

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