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A009284 as a simple table

n a(n)
0 1
1 2
2 4
3 10
4 32
5 128
6 616
7 3424
8 21632
9 152000
10 1179904
11 9986560
12 91734656
13 906835712
14 9609378304
15 108540031744
16 1302286401536
17 16533214773248
18 221420625719296
19 3119382193635328
20 46106240358318080
21 713450250644701184
22 11531738694322683904
23 194362558120600797184

[1,2,4,10,32,128,616,3424,21632,152000,1179904,
 9986560,91734656,906835712,9609378304,
 108540031744,1302286401536,16533214773248,
 221420625719296,3119382193635328,
 46106240358318080,713450250644701184,
 11531738694322683904,194362558120600797184]

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Last modified March 28 08:02 EDT 2024. Contains 371236 sequences. (Running on oeis4.)