A331355 - OEIS

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A331355 as a simple table

n	a(n)
1	1
2	49127
3	740360358
4	733776248840
5	155261523065875
6	12340612271439081
7	498926608780739307
8	12298018390569089088
9	207726683413584244680
10	2604177120221402303875
11	25650403577338260144611
12	207023317470352041578712

[1,49127,740360358,733776248840,155261523065875, 12340612271439081,498926608780739307, 12298018390569089088,207726683413584244680, 2604177120221402303875,25650403577338260144611, 207023317470352041578712]