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.

A271794 Number of set partitions of [n] having exactly seven pairs (m,m+1) such that m is in some block b and m+1 is in block b+1.

Table of values

n a(n)
7 0
8 1
9 36
10 670
11 9187
12 106830
13 1131496
14 11364373
15 110881203
16 1067003839
17 10226994410
18 98281964211
19 951292607495
20 9303462546993
21 92137177790612
22 925486949131652
23 9439151253691761
24 97826702119417900
25 1030788620292359259
26 11046243444215127104
27 120413943731688353055

List of values

[0, 1, 36, 670, 9187, 106830, 1131496, 11364373, 110881203, 1067003839, 10226994410, 98281964211, 951292607495, 9303462546993, 92137177790612, 925486949131652, 9439151253691761, 97826702119417900, 1030788620292359259, 11046243444215127104, 120413943731688353055]

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

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