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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.

A305784 Number of set partitions of [n] with alternating parity of elements and exactly ten blocks.

Table of values

n a(n)
10 1
11 10
12 75
13 495
14 3135
15 19657
16 120678
17 743321
18 4480240
19 27176489
20 161160411
21 964119615
22 5635200174
23 33302382467
24 192186538999
25 1123752073702
26 6413666231367
27 37159362571856
28 210072026510678
29 1207564204033112
30 6771732706003311
31 38664907592673960
32 215359228721631996

List of values

[1, 10, 75, 495, 3135, 19657, 120678, 743321, 4480240, 27176489, 161160411, 964119615, 5635200174, 33302382467, 192186538999, 1123752073702, 6413666231367, 37159362571856, 210072026510678, 1207564204033112, 6771732706003311, 38664907592673960, 215359228721631996]

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

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