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A033115 as a simple table

n a(n)
1 1
2 5
3 26
4 130
5 651
6 3255
7 16276
8 81380
9 406901
10 2034505
11 10172526
12 50862630
13 254313151
14 1271565755
15 6357828776
16 31789143880
17 158945719401
18 794728597005
19 3973642985026
20 19868214925130
21 99341074625651
22 496705373128255

[1,5,26,130,651,3255,16276,81380,406901,2034505,
 10172526,50862630,254313151,1271565755,6357828776,
 31789143880,158945719401,794728597005,
 3973642985026,19868214925130,99341074625651,
 496705373128255]

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Last modified May 7 19:47 EDT 2021. Contains 343652 sequences. (Running on oeis4.)