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A200731 as a simple table

n a(n)
0 1
1 1
2 4
3 22
4 139
5 953
6 6894
7 51796
8 400269
9 3161262
10 25403536
11 207043048
12 1707345547
13 14219399626
14 119431172630
15 1010495472960
16 8604568715969
17 73683710894255
18 634142349130800
19 5482062214763436
20 47582484748270453
21 414503778412715065
22 3622792181209018168
23 31758958747482608912

[1,1,4,22,139,953,6894,51796,400269,3161262,
 25403536,207043048,1707345547,14219399626,
 119431172630,1010495472960,8604568715969,
 73683710894255,634142349130800,5482062214763436,
 47582484748270453,414503778412715065,
 3622792181209018168,31758958747482608912]

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Last modified August 19 02:38 EDT 2024. Contains 375284 sequences. (Running on oeis4.)