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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.

A220353 G.f.: Sum_{n>=0} (1 - (1-x)^n)^n.

Table of values

n a(n)
0 1
1 1
2 4
3 23
4 176
5 1697
6 19805
7 271669
8 4285195
9 76430799
10 1521161530
11 33422603485
12 803584699252
13 20986514811397
14 591616582807036
15 17905570068475471
16 579092313210791549
17 19931241131544637637
18 727395001560116046739
19 28057672464546863483509
20 1140566596105346550309751
21 48735378037084078566334897
22 2183719157723179429519093520
23 102386962560815561519635957007

List of values

[1, 1, 4, 23, 176, 1697, 19805, 271669, 4285195, 76430799, 1521161530, 33422603485, 803584699252, 20986514811397, 591616582807036, 17905570068475471, 579092313210791549, 19931241131544637637, 727395001560116046739, 28057672464546863483509, 1140566596105346550309751, 48735378037084078566334897, 2183719157723179429519093520, 102386962560815561519635957007]

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

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