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A227022 as a simple table

n a(n)
1 12
2 72
3 335
4 1366
5 4948
6 16115
7 47659
8 129463
9 326522
10 771653
11 1722005
12 3652726
13 7406710
14 14426468
15 27103102
16 49288384
17 87029344
18 149600861
19 250930856
20 411535151
21 661105246
22 1041922558
23 1613307461
24 2457351181
25 3686223670

[12,72,335,1366,4948,16115,47659,129463,326522,
 771653,1722005,3652726,7406710,14426468,27103102,
 49288384,87029344,149600861,250930856,411535151,
 661105246,1041922558,1613307461,2457351181,
 3686223670]

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Last modified May 18 16:58 EDT 2024. Contains 372664 sequences. (Running on oeis4.)