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A004982 as a simple table

n a(n)
0 1
1 6
2 42
3 308
4 2310
5 17556
6 134596
7 1038312
8 8046918
9 62587140
10 488179692
11 3816677592
12 29897307804
13 234578876616
14 1843119744840
15 14499208659408
16 114181268192838
17 900017055167076
18 7100134546318044
19 56053693786721400
20 442824180915099060
21 3500419715805068760
22 27685137752276452920

[1,6,42,308,2310,17556,134596,1038312,8046918,
 62587140,488179692,3816677592,29897307804,
 234578876616,1843119744840,14499208659408,
 114181268192838,900017055167076,7100134546318044,
 56053693786721400,442824180915099060,
 3500419715805068760,27685137752276452920]

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Last modified April 16 18:12 EDT 2024. Contains 371750 sequences. (Running on oeis4.)