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A139738 as a simple table

n a(n)
0 0
1 2
2 36
3 488
4 1808
5 1696
6 213568
7 1611392
8 16113920
9 60475904
10 336323584
11 5510719488
12 37927325696
13 104395350016
14 3242976755712
15 14837581512704
16 148375815127040
17 920808197849088
18 9208081978490880
19 56052022765944832
20 848750603811160064

[0,2,36,488,1808,1696,213568,1611392,16113920,
 60475904,336323584,5510719488,37927325696,
 104395350016,3242976755712,14837581512704,
 148375815127040,920808197849088,9208081978490880,
 56052022765944832,848750603811160064]

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Last modified December 3 01:25 EST 2022. Contains 358510 sequences. (Running on oeis4.)