A196223 - OEIS

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A196223 as a simple table

n	a(n)
1	6
2	7
3	15
4	27
5	41
6	55
7	172
8	561
9	1334
10	6571
11	11490
12	429705
13	2173016
14	4417701
15	9063353
16	9531624
17	40411847
18	64538709
19	83537963
20	121316228
21	181504240
22	222586609

[6,7,15,27,41,55,172,561,1334,6571,11490,429705, 2173016,4417701,9063353,9531624,40411847,64538709, 83537963,121316228,181504240,222586609]