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A247745 as a simple table

n a(n)
0 0
1 0
2 0
3 12
4 224
5 2096
6 17732
7 160624
8 1498176
9 13404068
10 115123856
11 980282312
12 8327179132
13 70264899456
14 587727020332
15 4882463109244
16 40378339971868
17 332612594766452
18 2729309532474820
19 22316919930250328
20 181922495487675520
21 1479018078159317720

[0,0,0,12,224,2096,17732,160624,1498176,13404068,
 115123856,980282312,8327179132,70264899456,
 587727020332,4882463109244,40378339971868,
 332612594766452,2729309532474820,
 22316919930250328,181922495487675520,
 1479018078159317720]

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Last modified April 19 05:19 EDT 2024. Contains 371782 sequences. (Running on oeis4.)