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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.

A373658 a(n) = Sum_{k=0..n} binomial(n, k)*A050446(n, n - k). Alternating row sums of A373660.

Table of values

n a(n)
0 1
1 3
2 13
3 88
4 749
5 8128
6 105453
7 1606368
8 28047561
9 552980736
10 12149820237
11 294451219712
12 7803392603109
13 224513730740224
14 6969658947747357
15 232210548740331008
16 8265038127738534417
17 312994090288528379904
18 12565925964816171109069
19 533124629548518534705152

List of values

[1, 3, 13, 88, 749, 8128, 105453, 1606368, 28047561, 552980736, 12149820237, 294451219712, 7803392603109, 224513730740224, 6969658947747357, 232210548740331008, 8265038127738534417, 312994090288528379904, 12565925964816171109069, 533124629548518534705152]

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

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