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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.

A192546 a(n) = sum(stirling2(n,k)*stirling2(n+1,k+1),k=0..n).

Table of values

n a(n)
0 1
1 1
2 4
3 26
4 251
5 3157
6 50310
7 978315
8 22616102
9 610543614
10 18953178234
11 668200802513
12 26484030901784
13 1169889631517219
14 57168091338306720
15 3070545537985858612
16 180251920018830890897
17 11507450028966272232867
18 795397552661209049095698

List of values

[1, 1, 4, 26, 251, 3157, 50310, 978315, 22616102, 610543614, 18953178234, 668200802513, 26484030901784, 1169889631517219, 57168091338306720, 3070545537985858612, 180251920018830890897, 11507450028966272232867, 795397552661209049095698]

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

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