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A153291 as a simple table

n a(n)
0 1
1 1
2 4
3 21
4 124
5 782
6 5145
7 34873
8 241682
9 1704240
10 12186900
11 88162753
12 644058237
13 4744733614
14 35210349041
15 262976828766
16 1975324849238
17 14913200362138
18 113107780322778
19 861417424802187
20 6585224638006020
21 50515048389265713

[1,1,4,21,124,782,5145,34873,241682,1704240,
 12186900,88162753,644058237,4744733614,
 35210349041,262976828766,1975324849238,
 14913200362138,113107780322778,861417424802187,
 6585224638006020,50515048389265713]

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Last modified April 25 03:15 EDT 2024. Contains 371964 sequences. (Running on oeis4.)