A253979 - OEIS

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A253979 as a simple table

n	a(n)
1	3372
2	36434
3	417518
4	4858102
5	55806952
6	642845877
7	7415403315
8	85480006244
9	985444143538
10	11361747566006
11	130991488743058
12	1510223810043470
13	17411755136338197
14	200744247407994048
15	2314427455666140644

[3372,36434,417518,4858102,55806952,642845877, 7415403315,85480006244,985444143538, 11361747566006,130991488743058,1510223810043470, 17411755136338197,200744247407994048, 2314427455666140644]