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A148648 as a simple table

n a(n)
0 1
1 1
2 3
3 6
4 23
5 62
6 269
7 850
8 3891
9 13419
10 62990
11 229483
12 1093201
13 4139300
14 19918865
15 77643783
16 376413282
17 1501052044
18 7317882715
19 29721764794
20 145523007631
21 600006212256
22 2947600993255
23 12306920472227
24 60619759341056
25 255809804792113
26 1262717951385575
27 5377423110200973
28 26589798486133635

[1,1,3,6,23,62,269,850,3891,13419,62990,229483,
 1093201,4139300,19918865,77643783,376413282,
 1501052044,7317882715,29721764794,145523007631,
 600006212256,2947600993255,12306920472227,
 60619759341056,255809804792113,1262717951385575,
 5377423110200973,26589798486133635]

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Last modified July 22 06:32 EDT 2024. Contains 374481 sequences. (Running on oeis4.)