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A247775 as a simple table

n a(n)
0 1
1 1
2 5
3 55
4 493
5 3930
6 27207
7 207118
8 1622723
9 12544364
10 95912510
11 732066083
12 5616480627
13 43128778000
14 330817187318
15 2536012919124
16 19443866141395
17 149118307026576
18 1143608532988558
19 8769818352137034
20 67250342436670138
21 515711365536657077
22 3954797365004436075

[1,1,5,55,493,3930,27207,207118,1622723,12544364,
 95912510,732066083,5616480627,43128778000,
 330817187318,2536012919124,19443866141395,
 149118307026576,1143608532988558,8769818352137034,
 67250342436670138,515711365536657077,
 3954797365004436075]

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Last modified June 11 10:58 EDT 2024. Contains 373311 sequences. (Running on oeis4.)