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A220509 as a simple table

n a(n)
0 1
1 7
2 23
3 63
4 157
5 383
6 963
7 2551
8 7097
9 20439
10 60079
11 178511
12 533205
13 1596559
14 4785755
15 14352327
16 43050865
17 129145127
18 387426375
19 1162268383
20 3486792461
21 10460362527
22 31381070323
23 94143191063
24 282429550377
25 847288625143
26 2541865845983
27 7625597504751

[1,7,23,63,157,383,963,2551,7097,20439,60079,
 178511,533205,1596559,4785755,14352327,43050865,
 129145127,387426375,1162268383,3486792461,
 10460362527,31381070323,94143191063,282429550377,
 847288625143,2541865845983,7625597504751]

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Last modified May 8 23:08 EDT 2024. Contains 372341 sequences. (Running on oeis4.)