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A105476 as a simple table

n a(n)
0 1
1 1
2 3
3 6
4 15
5 33
6 78
7 177
8 411
9 942
10 2175
11 5001
12 11526
13 26529
14 61107
15 140694
16 324015
17 746097
18 1718142
19 3956433
20 9110859
21 20980158
22 48312735
23 111253209
24 256191414
25 589951041
26 1358525283
27 3128378406
28 7203954255
29 16589089473
30 38200952238
31 87968220657

[1,1,3,6,15,33,78,177,411,942,2175,5001,11526,
 26529,61107,140694,324015,746097,1718142,3956433,
 9110859,20980158,48312735,111253209,256191414,
 589951041,1358525283,3128378406,7203954255,
 16589089473,38200952238,87968220657]

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Last modified December 16 04:05 EST 2019. Contains 330013 sequences. (Running on oeis4.)