A197279 - OEIS

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A197279 as a simple table

n	a(n)
1	25
2	275
3	2626
4	57137
5	886737
6	13500114
7	209785488
8	3332948197
9	55701159000
10	888511016495
11	14113426224907
12	227682122103328
13	3670040705518361
14	58842498077190676
15	948189035889733725
16	15294961470395061151

[25,275,2626,57137,886737,13500114,209785488, 3332948197,55701159000,888511016495, 14113426224907,227682122103328,3670040705518361, 58842498077190676,948189035889733725, 15294961470395061151]