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A221510 as a simple table

n a(n)
1 0
2 2
3 3
4 12
5 30
6 89
7 248
8 706
9 1995
10 5652
11 15998
12 45297
13 128240
14 363074
15 1027923
16 2910236
17 8239390
18 23327177
19 66043368
20 186980482
21 529374875
22 1498754084
23 4243238398
24 12013359841
25 34011950560
26 96293859202
27 272624979363

[0,2,3,12,30,89,248,706,1995,5652,15998,45297,
 128240,363074,1027923,2910236,8239390,23327177,
 66043368,186980482,529374875,1498754084,
 4243238398,12013359841,34011950560,96293859202,
 272624979363]

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Last modified April 15 14:58 EDT 2024. Contains 371692 sequences. (Running on oeis4.)