A334333 - OEIS

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A334333 as a simple table

n	a(n)
1	8
2	56
3	344
4	2312
5	14648
6	96152
7	622616
8	4066376
9	26456024
10	172470776
11	1124590904
12	7328945336
13	47829176312
14	311758824440
15	2035191240584
16	13269735071816
17	86634355605416
18	565037351668904

[8,56,344,2312,14648,96152,622616,4066376, 26456024,172470776,1124590904,7328945336, 47829176312,311758824440,2035191240584, 13269735071816,86634355605416,565037351668904]