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A291416 as a simple table

n a(n)
0 4
1 19
2 86
3 392
4 1784
5 8121
6 36966
7 168267
8 765940
9 3486508
10 15870352
11 72240785
12 328835240
13 1496836103
14 6813498210
15 31014589884
16 141176346720
17 642625324009
18 2925187658218
19 13315259321575
20 60610173266216
21 275893470389144
22 1255848695053856
23 5716539585528849

[4,19,86,392,1784,8121,36966,168267,765940,
 3486508,15870352,72240785,328835240,1496836103,
 6813498210,31014589884,141176346720,642625324009,
 2925187658218,13315259321575,60610173266216,
 275893470389144,1255848695053856,5716539585528849]

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Last modified June 8 22:55 EDT 2024. Contains 373227 sequences. (Running on oeis4.)