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A061273 as a simple table

n a(n)
0 1
1 3
2 4
3 8
4 18
5 45
6 104
7 246
8 590
9 1447
10 3582
11 8864
12 22216
13 55989
14 141738
15 360486
16 920892
17 2360953
18 6073160
19 15664216
20 40510215
21 105017120
22 272821646
23 710143301
24 1851830021
25 4836984396
26 12653549540
27 33148606878
28 86954036990
29 228373959896
30 600482317125
31 1580587864193
32 4164596465439
33 10983396620288

[1,3,4,8,18,45,104,246,590,1447,3582,8864,22216,
 55989,141738,360486,920892,2360953,6073160,
 15664216,40510215,105017120,272821646,710143301,
 1851830021,4836984396,12653549540,33148606878,
 86954036990,228373959896,600482317125,
 1580587864193,4164596465439,10983396620288]

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Last modified March 1 09:59 EST 2024. Contains 370432 sequences. (Running on oeis4.)