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A011953 as a simple table

n a(n)
9 3
10 2
11 10
12 15
13 42
14 68
15 162
16 280
17 600
18 1088
19 2214
20 4112
21 8154
22 15366
23 30052
24 57208
25 111166
26 212982
27 412890
28 794688
29 1540002
30 2974150
31 5767344
32 11167872
33 21680832
34 42073640
35 81787057
36 159005154
37 309503502
38 602667098

[3,2,10,15,42,68,162,280,600,1088,2214,4112,8154,
 15366,30052,57208,111166,212982,412890,794688,
 1540002,2974150,5767344,11167872,21680832,
 42073640,81787057,159005154,309503502,602667098]

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Last modified May 12 18:22 EDT 2024. Contains 372494 sequences. (Running on oeis4.)