A250509 - OEIS

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A250509 as a simple table

n	a(n)
1	274625
2	7615233
3	184021141
4	3726466325
5	66217800903
6	1079694968285
7	16547443940527
8	239762491944665
9	3331432353007961
10	44764306424750549
11	583975364339968629
12	7434540289095411055
13	92726598333207379911

[274625,7615233,184021141,3726466325,66217800903, 1079694968285,16547443940527,239762491944665, 3331432353007961,44764306424750549, 583975364339968629,7434540289095411055, 92726598333207379911]