A236659 - OEIS

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A236659 as a simple table

n	a(n)
1	518
2	5538
3	58236
4	631692
5	6798520
6	72887588
7	782409904
8	8415647974
9	90402273416
10	970965716040
11	10431604290540
12	112087441699440
13	1204151665317648
14	12936226566648792
15	138981458800738608
16	1493166954450047964

[518,5538,58236,631692,6798520,72887588,782409904, 8415647974,90402273416,970965716040, 10431604290540,112087441699440,1204151665317648, 12936226566648792,138981458800738608, 1493166954450047964]