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A276894 as a simple table

n a(n)
0 1
1 1
2 3
3 13
4 75
5 466
6 3272
7 26032
8 232820
9 2304600
10 25003176
11 295139034
12 3767545662
13 51729553992
14 760326663792
15 11913105530016
16 198246166468224
17 3492246172917240
18 64928731038925800
19 1270685662509505560
20 26112819120798942120
21 562241528313838756560

[1,1,3,13,75,466,3272,26032,232820,2304600,
 25003176,295139034,3767545662,51729553992,
 760326663792,11913105530016,198246166468224,
 3492246172917240,64928731038925800,
 1270685662509505560,26112819120798942120,
 562241528313838756560]

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Last modified May 30 03:30 EDT 2024. Contains 372957 sequences. (Running on oeis4.)