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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.

A181547 a(n) = Sum_{k=0..floor(n/2)} C(n-k,k)^5.

Table of values

n a(n)
0 1
1 1
2 2
3 33
4 245
5 1268
6 10903
7 108801
8 876184
9 7319995
10 70550669
11 663827604
12 6051592703
13 57695451167
14 563736086740
15 5452227384417
16 53094611797387
17 525962074892014
18 5232943624317191
19 52145361057635835
20 523458523860890906

List of values

[1, 1, 2, 33, 245, 1268, 10903, 108801, 876184, 7319995, 70550669, 663827604, 6051592703, 57695451167, 563736086740, 5452227384417, 53094611797387, 525962074892014, 5232943624317191, 52145361057635835, 523458523860890906]

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

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