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A278431 as a simple table

n a(n)
1 40
2 1609
3 57760
4 2116789
5 67971132
6 1796061464
7 39513263094
8 743248079740
9 12242795030458
10 179948822861856
11 2394561544941994
12 29174653111810701
13 328380943500399272
14 3439574456695348801
15 33729578625174035514

[40,1609,57760,2116789,67971132,1796061464,
 39513263094,743248079740,12242795030458,
 179948822861856,2394561544941994,
 29174653111810701,328380943500399272,
 3439574456695348801,33729578625174035514]

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Last modified January 28 13:19 EST 2020. Contains 331321 sequences. (Running on oeis4.)