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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.

A221176 a(n) = Sum_{i=0..n} Stirling2(n,i)*2^(4i).

Table of values

n a(n)
0 1
1 16
2 272
3 4880
4 91920
5 1810192
6 37142288
7 791744272
8 17490370320
9 399558315792
10 9421351690000
11 228916588400400
12 5723078052339472
13 147025755978698512
14 3876566243300318992
15 104789417805394595600
16 2901159958960121863952
17 82188946843192555474704
18 2380551266738846355103504
19 70441182699006212824911632

List of values

[1, 16, 272, 4880, 91920, 1810192, 37142288, 791744272, 17490370320, 399558315792, 9421351690000, 228916588400400, 5723078052339472, 147025755978698512, 3876566243300318992, 104789417805394595600, 2901159958960121863952, 82188946843192555474704, 2380551266738846355103504, 70441182699006212824911632]

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

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