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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.

A361084 Number of partitions of [n] such that in each block the smallest element and the largest element have opposite parities.

Table of values

n a(n)
0 1
1 0
2 1
3 0
4 3
5 2
6 17
7 28
8 171
9 430
10 2617
11 8496
12 54739
13 214714
14 1477153
15 6743204
16 49550011
17 256645926
18 2010328585
19 11602635128
20 96590823907
21 612918061426
22 5404902119025
23 37319203169580
24 347468152001739
25 2589081441826334
26 25375080898848729
27 202668739104752960

List of values

[1, 0, 1, 0, 3, 2, 17, 28, 171, 430, 2617, 8496, 54739, 214714, 1477153, 6743204, 49550011, 256645926, 2010328585, 11602635128, 96590823907, 612918061426, 5404902119025, 37319203169580, 347468152001739, 2589081441826334, 25375080898848729, 202668739104752960]

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

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