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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.

A270529 Sum of the sizes of the (n+1)-th blocks in all set partitions of {1,2,...,2n+1}.

Table of values

n a(n)
0 1
1 5
2 47
3 675
4 13276
5 334751
6 10354804
7 380797185
8 16262852622
9 792102157717
10 43370872479317
11 2638621340623857
12 176656418678888190
13 12910491906798508171
14 1022900642521227415940
15 87345042902079159197907
16 7997120745886569461943400
17 781580696472700788364550933

List of values

[1, 5, 47, 675, 13276, 334751, 10354804, 380797185, 16262852622, 792102157717, 43370872479317, 2638621340623857, 176656418678888190, 12910491906798508171, 1022900642521227415940, 87345042902079159197907, 7997120745886569461943400, 781580696472700788364550933]

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

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