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A072950 as a simple table

n a(n)
1 0
2 0
3 3
4 19
5 107
6 691
7 4929
8 39958
9 361114
10 3617842
11 39839167
12 478446607
13 6222389995
14 87141729459
15 1307336091119
16 20919193567746
17 355645495960717
18 6401893756352511
19 121639082125097830
20 2432829344591803920
21 51089970941577272512
22 1123986359392616081280
23 25851788572429206208046
24 620444847283311945960411
25 15511151016762411683607733
26 403290394935411695227886859
27 10888849001142056697750434215
28 304887920401982037154914970647
29 8841752695810641318540928982492
30 265252660423388422894156833658591

[0,0,3,19,107,691,4929,39958,361114,3617842,
 39839167,478446607,6222389995,87141729459,
 1307336091119,20919193567746,355645495960717,
 6401893756352511,121639082125097830,
 2432829344591803920,51089970941577272512,
 1123986359392616081280,25851788572429206208046,
 620444847283311945960411,
 15511151016762411683607733,
 403290394935411695227886859,
 10888849001142056697750434215,
 304887920401982037154914970647,
 8841752695810641318540928982492,
 265252660423388422894156833658591]

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Last modified April 23 15:20 EDT 2024. Contains 371916 sequences. (Running on oeis4.)