A230650 - OEIS

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A230650 as a simple table

n	a(n)
1	0
2	33
3	177
4	2547
5	28161
6	337977
7	3951657
8	46564959
9	547445439
10	6440488155
11	75754392573
12	891094042215
13	10481688337035
14	123293830743177
15	1450276232412603
16	17059265522993919
17	200664184001736495

[0,33,177,2547,28161,337977,3951657,46564959, 547445439,6440488155,75754392573,891094042215, 10481688337035,123293830743177,1450276232412603, 17059265522993919,200664184001736495]