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A162920 as a simple table

n a(n)
0 1
1 3
2 6
3 12
4 21
5 36
6 63
7 108
8 186
9 321
10 552
11 951
12 1638
13 2820
14 4857
15 8364
16 14403
17 24804
18 42714
19 73557
20 126672
21 218139
22 375654
23 646908
24 1114029
25 1918452
26 3303735
27 5689308
28 9797466
29 16872057
30 29055096
31 50035311
32 86164998
33 148383348

[1,3,6,12,21,36,63,108,186,321,552,951,1638,2820,
 4857,8364,14403,24804,42714,73557,126672,218139,
 375654,646908,1114029,1918452,3303735,5689308,
 9797466,16872057,29055096,50035311,86164998,
 148383348]

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Last modified December 10 04:04 EST 2019. Contains 329885 sequences. (Running on oeis4.)