A156569 - OEIS

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A156569 as a simple table

n	a(n)
1	37
2	205
3	1193
4	6953
5	40525
6	236197
7	1376657
8	8023745
9	46765813
10	272571133
11	1588660985
12	9259394777
13	53967707677
14	314546851285
15	1833313400033
16	10685333548913
17	62278687893445
18	362986793811757
19	2115642074977097

[37,205,1193,6953,40525,236197,1376657,8023745, 46765813,272571133,1588660985,9259394777, 53967707677,314546851285,1833313400033, 10685333548913,62278687893445,362986793811757, 2115642074977097]