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A187246 as a simple table

n a(n)
0 0
1 0
2 0
3 1
4 7
5 42
6 267
7 1900
8 15263
9 137494
10 1375195
11 15127656
12 181532895
13 2359929682
14 33039019643
15 495585302836
16 7929364861759
17 134799202682670
18 2426385648353595
19 46101327318849376
20 922026546377249663
21 19362557473922767210
22 425976264426301927195

[0,0,0,1,7,42,267,1900,15263,137494,1375195,
 15127656,181532895,2359929682,33039019643,
 495585302836,7929364861759,134799202682670,
 2426385648353595,46101327318849376,
 922026546377249663,19362557473922767210,
 425976264426301927195]

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Last modified January 26 04:04 EST 2022. Contains 350572 sequences. (Running on oeis4.)