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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.

A271797 Number of set partitions of [n] having exactly ten 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)
10 0
11 1
12 66
13 2136
14 48579
15 898863
16 14610058
17 218221409
18 3081371441
19 41910602023
20 556179920807
21 7267182345418
22 94111399090828
23 1213858926603121
24 15651109608458234
25 202299948430668867
26 2627021681962917991
27 34330686032977315128
28 452091022434364946290

List of values

[0, 1, 66, 2136, 48579, 898863, 14610058, 218221409, 3081371441, 41910602023, 556179920807, 7267182345418, 94111399090828, 1213858926603121, 15651109608458234, 202299948430668867, 2627021681962917991, 34330686032977315128, 452091022434364946290]

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

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