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A273320 as a simple table

n a(n)
1 1
2 1
3 2
4 7
5 26
6 98
7 389
8 1617
9 6884
10 29818
11 131284
12 585966
13 2644084
14 12041541
15 55280357
16 255556439
17 1188632292
18 5558332388
19 26116960640
20 123243816854
21 583830832350
22 2775426824820
23 13235989547850
24 63306397853250
25 303597924249840
26 1459546439694004
27 7032721684219584
28 33958054240107363
29 164290025822878210
30 796288552943558821
31 3866056901078138147
32 18799970286124092609
33 91557579962243322708

[1,1,2,7,26,98,389,1617,6884,29818,131284,585966,
 2644084,12041541,55280357,255556439,1188632292,
 5558332388,26116960640,123243816854,583830832350,
 2775426824820,13235989547850,63306397853250,
 303597924249840,1459546439694004,7032721684219584,
 33958054240107363,164290025822878210,
 796288552943558821,3866056901078138147,
 18799970286124092609,91557579962243322708]

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Last modified July 18 01:34 EDT 2024. Contains 374377 sequences. (Running on oeis4.)