A303623 - OEIS

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A303623 as a simple table

n	a(n)
1	1
2	496
3	5411
4	160807
5	5249045
6	179884814
7	6323564388
8	224091914399
9	7966090548780
10	283582960504149
11	10101258867472961
12	359903623078870120
13	12824695714808614687
14	457013934122432156738
15	16286250681449999285061

[1,496,5411,160807,5249045,179884814,6323564388, 224091914399,7966090548780,283582960504149, 10101258867472961,359903623078870120, 12824695714808614687,457013934122432156738, 16286250681449999285061]