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A158840 as a simple table

n a(n)
0 1
1 2
2 7
3 42
4 374
5 4391
6 63637
7 1095362
8 21823226
9 493898216
10 12515588806
11 351062669154
12 10798972965266
13 361471373319171
14 13080119556342713
15 508813238759275712
16 21174032937728251318
17 938646693399848483498

[1,2,7,42,374,4391,63637,1095362,21823226,
 493898216,12515588806,351062669154,10798972965266,
 361471373319171,13080119556342713,
 508813238759275712,21174032937728251318,
 938646693399848483498]

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Last modified January 17 14:57 EST 2020. Contains 330958 sequences. (Running on oeis4.)