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A246854 as a simple table

n a(n)
1 1
2 4
3 26
4 122
5 146
6 458
7 746
8 3746
9 47612
10 16065500
11 388978292
12 5313509288
13 64278616556

[1,4,26,122,146,458,746,3746,47612,16065500,
 388978292,5313509288,64278616556]

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Last modified November 17 03:06 EST 2019. Contains 329216 sequences. (Running on oeis4.)