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A280573 as a simple table

n a(n)
1 1
2 5
3 55
4 1075
5 30825
6 1174725
7 56153575
8 3241453075
9 219981653625
10 17205716877125
11 1527315775776375
12 152004555650445875
13 16793815038459239625
14 2042866310966722613125
15 271723598687954810434375
16 39287423162026628955721875
17 6143464129092882413626065625
18 1034396495380447234136660853125
19 186805274512176503194633726284375
20 36060209533917578045193572845421875 

[1,5,55,1075,30825,1174725,56153575,3241453075,
 219981653625,17205716877125,1527315775776375,
 152004555650445875,16793815038459239625,
 2042866310966722613125,271723598687954810434375,
 39287423162026628955721875,
 6143464129092882413626065625,
 1034396495380447234136660853125,
 186805274512176503194633726284375,
 36060209533917578045193572845421875]

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Last modified August 30 21:50 EDT 2024. Contains 375550 sequences. (Running on oeis4.)