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A126369 as a simple table

n a(n)
0 1
1 15
2 43
3 125
4 365
5 1069
6 3137
7 9219
8 27123
9 79869
10 235361
11 693991
12 2047367
13 6042659
14 17841247
15 52694573
16 155679885
17 460055423
18 1359834747
19 4020216877
20 11887503933
21 35156155109
22 103985848697
23 307611659819
24 910083564731

[1,15,43,125,365,1069,3137,9219,27123,79869,
 235361,693991,2047367,6042659,17841247,52694573,
 155679885,460055423,1359834747,4020216877,
 11887503933,35156155109,103985848697,307611659819,
 910083564731]

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Last modified February 29 05:25 EST 2020. Contains 332353 sequences. (Running on oeis4.)