A222634 - OEIS

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A222634 as a simple table

n	a(n)
1	12
2	121
3	915
4	16892
5	160614
6	3329090
7	34323408
8	762299807
9	8239136941
10	188448398522
11	2082442612871
12	48247276348290
13	539302865240417
14	12584194182415994
15	141638011539902610
16	3320361359110272916

[12,121,915,16892,160614,3329090,34323408, 762299807,8239136941,188448398522,2082442612871, 48247276348290,539302865240417,12584194182415994, 141638011539902610,3320361359110272916]