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A247739 as a simple table

n a(n)
0 0
1 0
2 4
3 60
4 556
5 5328
6 45316
7 405636
8 3583136
9 30801264
10 261702184
11 2204389124
12 18485952896
13 154072120428
14 1276431617512
15 10525735832272
16 86463238965520
17 707822586795020
18 5776135319900600
19 47001025464956044
20 381480686633266156
21 3089168335328298424
22 24963223479997963992

[0,0,4,60,556,5328,45316,405636,3583136,30801264,
 261702184,2204389124,18485952896,154072120428,
 1276431617512,10525735832272,86463238965520,
 707822586795020,5776135319900600,
 47001025464956044,381480686633266156,
 3089168335328298424,24963223479997963992]

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Last modified May 25 16:17 EDT 2024. Contains 372801 sequences. (Running on oeis4.)