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A180278 as a simple table

n a(n)
0 0
1 1
2 3
3 13
4 47
5 447
6 2163
7 24263
8 241727
9 2923783
10 16485763
11 169053487
12 4535472963
13 36316463227
14 879728844873
15 4476534430363
16 119919330795347
17 1374445897718223
18 106298577886531087

[0,1,3,13,47,447,2163,24263,241727,2923783,
 16485763,169053487,4535472963,36316463227,
 879728844873,4476534430363,119919330795347,
 1374445897718223,106298577886531087]

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Last modified April 23 03:30 EDT 2024. Contains 371906 sequences. (Running on oeis4.)