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A014278 as a simple table

n a(n)
0 0
1 1
2 1
3 2
4 3
5 6
6 12
7 30
8 67
9 159
10 381
11 929
12 2282
13 5680
14 14241
15 36009
16 91611
17 234512
18 603330
19 1559582
20 4047956
21 10546556
22 27570983
23 72301171
24 190136444
25 501323021
26 1324981299
27 3509660618
28 9315633928
29 24773632117
30 65999430834
31 176121938800
32 470720836811
33 1259936118810
34 3376997883966
35 9063076063854

[0,1,1,2,3,6,12,30,67,159,381,929,2282,5680,14241,
 36009,91611,234512,603330,1559582,4047956,
 10546556,27570983,72301171,190136444,501323021,
 1324981299,3509660618,9315633928,24773632117,
 65999430834,176121938800,470720836811,
 1259936118810,3376997883966,9063076063854]

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Last modified November 17 00:08 EST 2019. Contains 329209 sequences. (Running on oeis4.)