cp's OEIS Frontend

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.

A270959 Number of set partitions of [n] having exactly five pairs (m,m+1) such that m+1 is in some block b and m is in block b+1.

Table of values

n a(n)
9 4
10 127
11 1856
12 20074
13 191967
14 1753407
15 15845905
16 144101608
17 1329935983
18 12512797900
19 120312183453
20 1183814298898
21 11928314725101
22 123117825217659
23 1301722909447207
24 14096302961791594
25 156301760858165116
26 1773962132569829592
27 20600385809700410195

List of values

[4, 127, 1856, 20074, 191967, 1753407, 15845905, 144101608, 1329935983, 12512797900, 120312183453, 1183814298898, 11928314725101, 123117825217659, 1301722909447207, 14096302961791594, 156301760858165116, 1773962132569829592, 20600385809700410195]

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

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