cp's OEIS Frontend

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.

A234643 E.g.f.: Sum_{n>=0} Integral^n (exp(x) + 1)^n dx^n, where integral^n F(x) dx^n is the n-th integration of F(x) with no constant of integration.

Table of values

n a(n)
0 1
1 2
2 5
3 13
4 35
5 99
6 297
7 951
8 3265
9 12047
10 47761
11 202975
12 921281
13 4447327
14 22737537
15 122639583
16 695404929
17 4132531679
18 25667031937
19 166211936735
20 1119791799425
21 7833568488415
22 56802921911681
23 426267651506655
24 3305731721387649
25 26457699508131807
26 218276886237532033

List of values

[1, 2, 5, 13, 35, 99, 297, 951, 3265, 12047, 47761, 202975, 921281, 4447327, 22737537, 122639583, 695404929, 4132531679, 25667031937, 166211936735, 1119791799425, 7833568488415, 56802921911681, 426267651506655, 3305731721387649, 26457699508131807, 218276886237532033]