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A153970 as a simple table

n a(n)
0 1
1 2
2 2
3 4
4 7
5 12
6 22
7 77
8 142
9 532
10 1881
11 6680
12 23965
13 163600
14 576849
15 3866824
16 26635009
17 176366633
18 1204710337
19 15393505413
20 104674234457
21 1334666498849
22 17456897665295
23 221752333314343
24 2885843552520634
25 70795502834846238

[1,2,2,4,7,12,22,77,142,532,1881,6680,23965,
 163600,576849,3866824,26635009,176366633,
 1204710337,15393505413,104674234457,1334666498849,
 17456897665295,221752333314343,2885843552520634,
 70795502834846238]

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Last modified June 16 23:34 EDT 2024. Contains 373432 sequences. (Running on oeis4.)