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A177471 as a simple table

n a(n)
0 1
1 1
2 2
3 6
4 18
5 61
6 281
7 1541
8 8920
9 57924
10 437490
11 3611389
12 31721537
13 304085783
14 3180772870
15 35422074330
16 418050879810
17 5266547286061
18 70459362412265
19 991921937012273
20 14681437097585260
21 228615478225446360
22 3730868960721027906
23 63577641238069645741

[1,1,2,6,18,61,281,1541,8920,57924,437490,3611389,
 31721537,304085783,3180772870,35422074330,
 418050879810,5266547286061,70459362412265,
 991921937012273,14681437097585260,
 228615478225446360,3730868960721027906,
 63577641238069645741]

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Last modified June 15 03:12 EDT 2024. Contains 373402 sequences. (Running on oeis4.)