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A180664 as a simple table

n a(n)
0 0
1 2
2 8
3 23
4 63
5 167
6 440
7 1154
8 3024
9 7919
10 20735
11 54287
12 142128
13 372098
14 974168
15 2550407
16 6677055
17 17480759
18 45765224
19 119814914
20 313679520
21 821223647
22 2149991423
23 5628750623
24 14736260448
25 38580030722
26 101003831720

[0,2,8,23,63,167,440,1154,3024,7919,20735,54287,
 142128,372098,974168,2550407,6677055,17480759,
 45765224,119814914,313679520,821223647,2149991423,
 5628750623,14736260448,38580030722,101003831720]

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Last modified April 24 16:48 EDT 2024. Contains 371962 sequences. (Running on oeis4.)