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A090317 as a simple table

n a(n)
0 1
1 2
2 7
3 28
4 118
5 510
6 2235
7 9876
8 43870
9 195556
10 873814
11 3911168
12 17527904
13 78622982
14 352911939
15 1584927828
16 7120769526
17 32002212252
18 143859840114
19 646819996008
20 2908670252676
21 13081556909292
22 58839348572574
23 264674150692488
24 1190649451348908
25 5356483791828840
26 24098774900561500

[1,2,7,28,118,510,2235,9876,43870,195556,873814,
 3911168,17527904,78622982,352911939,1584927828,
 7120769526,32002212252,143859840114,646819996008,
 2908670252676,13081556909292,58839348572574,
 264674150692488,1190649451348908,5356483791828840,
 24098774900561500]

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Last modified March 29 03:41 EDT 2024. Contains 371264 sequences. (Running on oeis4.)