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A212273 as a simple table

n a(n)
1 1
2 2
3 12
4 108
5 1240
6 16980
7 267624
8 4750872
9 93615408
10 2026018980
11 47764893000
12 1218621868200
13 33459133580496
14 983950866169544
15 30862364045494800
16 1028656519404191280
17 36312294166359724128
18 1353561646509338629572
19 53133041579508472510728

[1,2,12,108,1240,16980,267624,4750872,93615408,
 2026018980,47764893000,1218621868200,
 33459133580496,983950866169544,30862364045494800,
 1028656519404191280,36312294166359724128,
 1353561646509338629572,53133041579508472510728]

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Last modified June 20 19:55 EDT 2021. Contains 345222 sequences. (Running on oeis4.)