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A253831 as a simple table

n a(n)
0 1
1 2
2 5
3 12
4 30
5 76
6 197
7 522
8 1418
9 3956
10 11354
11 33554
12 102104
13 319608
14 1027237
15 3381714
16 11371366
17 38946892
18 135505958
19 477781296
20 1703671604
21 6132978608
22 22256615602
23 81327116484
24 298938112816
25 1104473254912
26 4098996843500
27 15272792557230
28 57106723430892
29 214202598271360
30 805743355591301

[1,2,5,12,30,76,197,522,1418,3956,11354,33554,
 102104,319608,1027237,3381714,11371366,38946892,
 135505958,477781296,1703671604,6132978608,
 22256615602,81327116484,298938112816,
 1104473254912,4098996843500,15272792557230,
 57106723430892,214202598271360,805743355591301]

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Last modified September 18 16:42 EDT 2020. Contains 337170 sequences. (Running on oeis4.)