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A280839 as a simple table

n a(n)
0 1
1 3
2 6
3 15
4 26
5 63
6 106
7 255
8 426
9 1023
10 1710
11 4091
12 6820
13 16382
14 27307
15 65532
16 109226
17 262143
18 437992
19 1047480
20 1746024
21 4193944
22 6990824
23 16776408
24 27962088
25 67108824
26 112126184
27 268155096
28 446982376
29 1073658072
30 1789651176
31 4294719704
32 7158245608

[1,3,6,15,26,63,106,255,426,1023,1710,4091,6820,
 16382,27307,65532,109226,262143,437992,1047480,
 1746024,4193944,6990824,16776408,27962088,
 67108824,112126184,268155096,446982376,1073658072,
 1789651176,4294719704,7158245608]

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Last modified July 13 04:31 EDT 2020. Contains 335673 sequences. (Running on oeis4.)