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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.

A316186 Expansion of e.g.f. P(P(x)), where P(x) = Sum_{k>=1} prime(k)*x^k/k!.

Table of values

n a(n)
1 4
2 18
3 104
4 687
5 5064
6 40934
7 358083
8 3346832
9 33123000
10 345219919
11 3777134694
12 43291666298
13 518855171115
14 6491738816768
15 84656365477452
16 1148895613585775
17 16201725990730392
18 237030534528945348
19 3591398122456079285
20 56254812062478841340
21 909319044063443870702

List of values

[4, 18, 104, 687, 5064, 40934, 358083, 3346832, 33123000, 345219919, 3777134694, 43291666298, 518855171115, 6491738816768, 84656365477452, 1148895613585775, 16201725990730392, 237030534528945348, 3591398122456079285, 56254812062478841340, 909319044063443870702]

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

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