A172903 - OEIS

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A172903 as a simple table

n	a(n)
1	1
2	393
3	248137
4	200148649
5	187403959401
6	193953937375521
7	215298243454580553
8	252150480931735527177
9	307972094130678784570009
10	389031356288581849014042193
11	505162253803288598888223487713

[1,393,248137,200148649,187403959401, 193953937375521,215298243454580553, 252150480931735527177,307972094130678784570009, 389031356288581849014042193, 505162253803288598888223487713]