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A008549 as a simple table

n a(n)
0 0
1 1
2 6
3 29
4 130
5 562
6 2380
7 9949
8 41226
9 169766
10 695860
11 2842226
12 11576916
13 47050564
14 190876696
15 773201629
16 3128164186
17 12642301534
18 51046844836
19 205954642534
20 830382690556
21 3345997029244
22 13475470680616
23 54244942336114
24 218269673491780
25 877940640368572

[0,1,6,29,130,562,2380,9949,41226,169766,695860,
 2842226,11576916,47050564,190876696,773201629,
 3128164186,12642301534,51046844836,205954642534,
 830382690556,3345997029244,13475470680616,
 54244942336114,218269673491780,877940640368572]

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Last modified November 21 15:56 EST 2018. Contains 317449 sequences. (Running on oeis4.)