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A027241 as a simple table

n a(n)
2 1
3 7
4 38
5 201
6 991
7 5119
8 25108
9 131207
10 652171
11 3467959
12 17536482
13 94772169
14 487259131
15 2668269045
16 13920305080
17 77008669339
18 406737748473
19 2267418205201
20 12099265896022
21 67836037484417
22 365071772684071
23 2055622507395167
24 11141223793940397
25 62938095325080771

[1,7,38,201,991,5119,25108,131207,652171,3467959,
 17536482,94772169,487259131,2668269045,
 13920305080,77008669339,406737748473,
 2267418205201,12099265896022,67836037484417,
 365071772684071,2055622507395167,
 11141223793940397,62938095325080771]

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Last modified May 24 14:36 EDT 2022. Contains 354037 sequences. (Running on oeis4.)