A035863 - OEIS

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A035863 as a simple table

n	a(n)
0	1
1	1406
2	494912
3	77756018
4	6920161874
5	398019718826
6	16094610778352
7	485262943621094
8	11394625956532886
9	215500967075111278
10	3371762603125563792
11	44608224481707201954
12	508174845038478558618

[1,1406,494912,77756018,6920161874,398019718826, 16094610778352,485262943621094,11394625956532886, 215500967075111278,3371762603125563792, 44608224481707201954,508174845038478558618]