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A278794 as a simple table

n a(n)
1 4
2 1713
3 145208
4 7196852
5 263134490
6 7804657491
7 197112382716
8 4361870602212
9 86190316947578
10 1541836669016245
11 25236090146159518
12 381171321062737412
13 5350587072804920340
14 70218509804475284134
15 865927060368778196406

[4,1713,145208,7196852,263134490,7804657491,
 197112382716,4361870602212,86190316947578,
 1541836669016245,25236090146159518,
 381171321062737412,5350587072804920340,
 70218509804475284134,865927060368778196406]

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Last modified January 27 05:13 EST 2021. Contains 340451 sequences. (Running on oeis4.)