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A291255 as a simple table

n a(n)
0 2
1 7
2 18
3 55
4 144
5 404
6 1060
7 2853
8 7442
9 19573
10 50670
11 131368
12 337622
13 866819
14 2213650
15 5642899
16 14332988
17 36335548
18 91872760
19 231875713
20 584030738
21 1468631153
22 3686943130
23 9242753104
24 23138167146
25 57851432575
26 144470316562
27 360384852207
28 898051760168

[2,7,18,55,144,404,1060,2853,7442,19573,50670,
 131368,337622,866819,2213650,5642899,14332988,
 36335548,91872760,231875713,584030738,1468631153,
 3686943130,9242753104,23138167146,57851432575,
 144470316562,360384852207,898051760168]

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Last modified March 29 08:51 EDT 2024. Contains 371268 sequences. (Running on oeis4.)