A240274 - OEIS

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A240274 as a simple table

n	a(n)
1	7
2	36
3	582
4	8265
5	126286
6	2059061
7	34514871
8	591083808
9	10257888481
10	179492029479
11	3156570684216
12	55683928149753
13	984159273442563
14	17414013354270353
15	308343982790239450
16	5462057581927992592

[7,36,582,8265,126286,2059061,34514871,591083808, 10257888481,179492029479,3156570684216, 55683928149753,984159273442563,17414013354270353, 308343982790239450,5462057581927992592]