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A232910 as a simple table

n a(n)
1 4
2 34
3 320
4 2958
5 27692
6 250934
7 2338508
8 21159320
9 192619880
10 1767181410
11 16165706444
12 147550684090
13 1348528674604
14 12330783808396
15 112700663242560
16 1029964489404282
17 9413986758909060
18 86046903897714270
19 786467010156728596

[4,34,320,2958,27692,250934,2338508,21159320,
 192619880,1767181410,16165706444,147550684090,
 1348528674604,12330783808396,112700663242560,
 1029964489404282,9413986758909060,
 86046903897714270,786467010156728596]

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Last modified May 7 10:18 EDT 2021. Contains 343650 sequences. (Running on oeis4.)