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A007056 as a simple table

n a(n)
0 1
1 3
2 9
3 21
4 57
5 123
6 279
7 549
8 1209
9 2127
10 4689
11 7989
12 17031
13 28395
14 60615
15 98061
16 208569
17 334563
18 705789
19 1121877
20 2356737
21 3718827
22 7786359
23 12223077
24 25488903
25 39857523
26 82876257
27 129135729
28 267784119
29 416118219
30 860825439
31 1334448261
32 2754778809
33 4261609131
34 8781196329
35 13559714109
36 27893530029

[1,3,9,21,57,123,279,549,1209,2127,4689,7989,
 17031,28395,60615,98061,208569,334563,705789,
 1121877,2356737,3718827,7786359,12223077,25488903,
 39857523,82876257,129135729,267784119,416118219,
 860825439,1334448261,2754778809,4261609131,
 8781196329,13559714109,27893530029]

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Last modified August 30 21:02 EDT 2024. Contains 375548 sequences. (Running on oeis4.)