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A140431 as a simple table

n a(n)
0 0
1 2
2 2
3 12
4 22
5 92
6 222
7 772
8 2102
9 6732
10 19342
11 59732
12 175782
13 534172
14 1588862
15 4793892
16 14327062
17 43090412
18 129052782
19 387595252
20 1161911942
21 3487483452
22 10458955102
23 31383855812
24 94137586422
25 282440721292
26 847266239822

[0,2,2,12,22,92,222,772,2102,6732,19342,59732,
 175782,534172,1588862,4793892,14327062,43090412,
 129052782,387595252,1161911942,3487483452,
 10458955102,31383855812,94137586422,282440721292,
 847266239822]

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Last modified April 23 13:11 EDT 2024. Contains 371913 sequences. (Running on oeis4.)