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A263900 as a simple table

n a(n)
1 1
2 2
3 6
4 20
5 61
6 185
7 577
8 1788
9 5540
10 17165
11 52991
12 163600
13 504983
14 1557494
15 4800848
16 14791118
17 45548176
18 140205732
19 431413253
20 1326980704
21 4080331096
22 12542893726
23 38546177015
24 118428377799
25 363772262171
26 1117147291580
27 3430089594015

[1,2,6,20,61,185,577,1788,5540,17165,52991,163600,
 504983,1557494,4800848,14791118,45548176,
 140205732,431413253,1326980704,4080331096,
 12542893726,38546177015,118428377799,363772262171,
 1117147291580,3430089594015]

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Last modified March 29 09:59 EDT 2024. Contains 371268 sequences. (Running on oeis4.)