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A061004 as a simple table

n a(n)
1 0
2 2
3 20
4 114
5 434
6 1296
7 3268
8 7282
9 14762
10 27778
11 49210
12 82944
13 134078
14 209154
15 316406
16 466034
17 670488
18 944784
19 1306830
20 1777778
21 2382392
22 3149442
23 4112108
24 5308416
25 6781684
26 8580994
27 10761680
28 13385842
29 16522870
30 20250000
31 24652880

[0,2,20,114,434,1296,3268,7282,14762,27778,49210,
 82944,134078,209154,316406,466034,670488,944784,
 1306830,1777778,2382392,3149442,4112108,5308416,
 6781684,8580994,10761680,13385842,16522870,
 20250000,24652880]

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Last modified May 15 19:21 EDT 2024. Contains 372549 sequences. (Running on oeis4.)