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A100702 as a simple table

n a(n)
0 1
1 3
2 7
3 19
4 55
5 163
6 487
7 1459
8 4375
9 13123
10 39367
11 118099
12 354295
13 1062883
14 3188647
15 9565939
16 28697815
17 86093443
18 258280327
19 774840979
20 2324522935
21 6973568803
22 20920706407
23 62762119219
24 188286357655
25 564859072963

[1,3,7,19,55,163,487,1459,4375,13123,39367,118099,
 354295,1062883,3188647,9565939,28697815,86093443,
 258280327,774840979,2324522935,6973568803,
 20920706407,62762119219,188286357655,564859072963]

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Last modified August 6 19:52 EDT 2020. Contains 336256 sequences. (Running on oeis4.)