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A006762 as a simple table

n a(n)
1 0
2 0
3 4
4 17
5 61
6 214
7 758
8 2723
9 9908
10 36444
11 135266
12 505859
13 1903888
14 7204872
15 27394664
16 104592935
17 400795842
18 1540820540
19 5940738674
20 22964779658
21 88983512781
22 345532572676
23 1344372335522
24 5239988770266
25 20457802016009
26 79992676367106
27 313224032098242
28 1228088671826971

[0,0,4,17,61,214,758,2723,9908,36444,135266,
 505859,1903888,7204872,27394664,104592935,
 400795842,1540820540,5940738674,22964779658,
 88983512781,345532572676,1344372335522,
 5239988770266,20457802016009,79992676367106,
 313224032098242,1228088671826971]

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Last modified April 23 07:42 EDT 2024. Contains 371905 sequences. (Running on oeis4.)