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A151278 as a simple table

n a(n)
0 1
1 2
2 4
3 10
4 26
5 66
6 178
7 488
8 1320
9 3674
10 10318
11 28728
12 81344
13 231634
14 655614
15 1876510
16 5391998
17 15423550
18 44473310
19 128605264
20 370583896
21 1074340126
22 3121406738
23 9043275450
24 26324579482
25 76763009234
26 223318464418
27 652169185724
28 1907256905140
29 5566743069850
30 16299205388766
31 47779358006460

[1,2,4,10,26,66,178,488,1320,3674,10318,28728,
 81344,231634,655614,1876510,5391998,15423550,
 44473310,128605264,370583896,1074340126,
 3121406738,9043275450,26324579482,76763009234,
 223318464418,652169185724,1907256905140,
 5566743069850,16299205388766,47779358006460]

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Last modified July 23 17:14 EDT 2024. Contains 374552 sequences. (Running on oeis4.)