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.

A305783 Number of set partitions of [n] with alternating parity of elements and exactly nine blocks.

Table of values

n a(n)
9 1
10 9
11 61
12 359
13 2071
14 11521
15 64536
16 351890
17 1937292
18 10385051
19 56327364
20 297361209
21 1592259558
22 8294350334
23 43929021137
24 226237017737
25 1187116072881
26 6055309005874
27 31524381075907
28 159529143743414
29 825010507438945
30 4148043681253075
31 21331478060780614

List of values

[1, 9, 61, 359, 2071, 11521, 64536, 351890, 1937292, 10385051, 56327364, 297361209, 1592259558, 8294350334, 43929021137, 226237017737, 1187116072881, 6055309005874, 31524381075907, 159529143743414, 825010507438945, 4148043681253075, 21331478060780614]

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

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