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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.

A270703 Total sum of the sizes of all blocks with maximal element n in all set partitions of {1,2,...,2n-1}.

Table of values

n a(n)
1 1
2 4
3 41
4 670
5 15717
6 492112
7 19610565
8 961547874
9 56562256041
10 3914022281500
11 313638627550657
12 28730918805512678
13 2976543225606178893
14 345587228510915829224
15 44615408909143456529309
16 6361213086726610526079402
17 995709801367376369056571089

List of values

[1, 4, 41, 670, 15717, 492112, 19610565, 961547874, 56562256041, 3914022281500, 313638627550657, 28730918805512678, 2976543225606178893, 345587228510915829224, 44615408909143456529309, 6361213086726610526079402, 995709801367376369056571089]

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

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