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A109365 as a simple table

n a(n)
0 1
1 4
2 15
3 95
4 770
5 9515
6 133705
7 2434740
8 48800455
9 1178409485
10 35589088260
11 1139792430095
12 43489116179135
13 1829785252978430
14 80550797873775295
15 3871887406957425075
16 209479224856053619610
17 12587715623517651636415

[1,4,15,95,770,9515,133705,2434740,48800455,
 1178409485,35589088260,1139792430095,
 43489116179135,1829785252978430,80550797873775295,
 3871887406957425075,209479224856053619610,
 12587715623517651636415]

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Last modified June 6 17:25 EDT 2024. Contains 373134 sequences. (Running on oeis4.)