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A231957 as a simple table

n a(n)
1 4
2 18
3 18
4 64
5 142
6 64
7 236
8 1034
9 1034
10 236
11 888
12 7756
13 14842
14 7756
15 888
16 3336
17 58350
18 220472
19 220472
20 58350
21 3336
22 12512
23 438540
24 3292876
25 6517534
26 3292876
27 438540
28 12512
29 46928
30 3295580
31 49124582
32 193955142
33 193955142
34 49124582
35 3295580
36 46928

[4,18,18,64,142,64,236,1034,1034,236,888,7756,
 14842,7756,888,3336,58350,220472,220472,58350,
 3336,12512,438540,3292876,6517534,3292876,438540,
 12512,46928,3295580,49124582,193955142,193955142,
 49124582,3295580,46928]

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Last modified December 6 21:48 EST 2019. Contains 329809 sequences. (Running on oeis4.)