A203375 - OEIS

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A203375 as a simple table

n	a(n)
1	972
2	15564
3	253068
4	4136292
5	67731264
6	1109832180
7	18189909480
8	298154846436
9	4887277903812
10	80111933563464
11	1313194979326320
12	21525927546323460
13	352853780193705264
14	5783993041849734792
15	94811448308361126864

[972,15564,253068,4136292,67731264,1109832180, 18189909480,298154846436,4887277903812, 80111933563464,1313194979326320,21525927546323460, 352853780193705264,5783993041849734792, 94811448308361126864]