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A255449 as a simple table

n a(n)
0 1
1 5
2 19
3 71
4 257
5 925
6 3323
7 11919
8 42729
9 153173
10 549075
11 1968247
12 7055601
13 25292621
14 90668587
15 325028895
16 1165167673
17 4176914949
18 14973497539
19 53677355783
20 192423938625
21 689806295677
22 2472835597211
23 8864685923631
24 31778359388937
25 113919900383925
26 408383064188083
27 1463982386475159

[1,5,19,71,257,925,3323,11919,42729,153173,549075,
 1968247,7055601,25292621,90668587,325028895,
 1165167673,4176914949,14973497539,53677355783,
 192423938625,689806295677,2472835597211,
 8864685923631,31778359388937,113919900383925,
 408383064188083,1463982386475159]

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Last modified April 20 02:59 EDT 2019. Contains 322291 sequences. (Running on oeis4.)