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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.

A383136 a(n) = Sum_{k=0..n} k^2 * 2^(n-k) * binomial(n,k).

Table of values

n a(n)
0 0
1 1
2 8
3 45
4 216
5 945
6 3888
7 15309
8 58320
9 216513
10 787320
11 2814669
12 9920232
13 34543665
14 119042784
15 406552365
16 1377495072
17 4634696961
18 15496819560
19 51526925037
20 170465015160
21 561372288561
22 1841022163728
23 6014703091725
24 19581781196016
25 63546645708225
26 205608702558168

List of values

[0, 1, 8, 45, 216, 945, 3888, 15309, 58320, 216513, 787320, 2814669, 9920232, 34543665, 119042784, 406552365, 1377495072, 4634696961, 15496819560, 51526925037, 170465015160, 561372288561, 1841022163728, 6014703091725, 19581781196016, 63546645708225, 205608702558168]

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

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