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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.

A320560 Number of set partitions of [n] such that for each block b the smallest integer interval containing b has at most ten elements and for at least one block c the smallest integer interval containing c has exactly ten elements.

Table of values

n a(n)
10 21147
11 172649
12 977607
13 4732307
14 21196160
15 91356135
16 387221998
17 1635077589
18 6933701115
19 29953216031
20 132647186513
21 592562183163
22 2645622362009
23 11748752847703
24 51794376799161
25 226629372792025
26 984996790932516
27 4257860514411454
28 18336632254191876

List of values

[21147, 172649, 977607, 4732307, 21196160, 91356135, 387221998, 1635077589, 6933701115, 29953216031, 132647186513, 592562183163, 2645622362009, 11748752847703, 51794376799161, 226629372792025, 984996790932516, 4257860514411454, 18336632254191876]

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

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