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A178975 as a simple table

n a(n)
1 0
2 0
3 0
4 0
5 0
6 0
7 0
8 640
9 7290
10 123640
11 640574
12 3869280
13 12950132
14 47022360
15 123467040
16 340840960
17 759697190
18 1758672648
19 3494388306
20 7150739360
21 13041285516
22 24354594440
23 41566378136
24 72345297024
25 117101090250
26 192694385416
27 298703838186
28 469581881888
29 702148696580
30 1062719841960
31 1541332566284
32 2259300468736
33 3192255589842
34 4552716843720
35 6288527141890
36 8758324830240
37 11859789616944
38 16178716174856
39 21527161542900
40 28834708173440

[0,0,0,0,0,0,0,640,7290,123640,640574,3869280,
 12950132,47022360,123467040,340840960,759697190,
 1758672648,3494388306,7150739360,13041285516,
 24354594440,41566378136,72345297024,117101090250,
 192694385416,298703838186,469581881888,
 702148696580,1062719841960,1541332566284,
 2259300468736,3192255589842,4552716843720,
 6288527141890,8758324830240,11859789616944,
 16178716174856,21527161542900,28834708173440]

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Last modified June 20 18:00 EDT 2024. Contains 373532 sequences. (Running on oeis4.)