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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.

A285365 Sum of the entries in the third blocks of all set partitions of [n].

Table of values

n a(n)
3 3
4 28
5 185
6 1094
7 6293
8 36619
9 219931
10 1376929
11 9023266
12 61944014
13 445076570
14 3341575188
15 26164558199
16 213243368898
17 1805626838935
18 15856747810014
19 144189514375955
20 1355629263039685
21 13159535002316403
22 131729480987412527
23 1358188539892586220

List of values

[3, 28, 185, 1094, 6293, 36619, 219931, 1376929, 9023266, 61944014, 445076570, 3341575188, 26164558199, 213243368898, 1805626838935, 15856747810014, 144189514375955, 1355629263039685, 13159535002316403, 131729480987412527, 1358188539892586220]

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

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