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A218686 as a simple table

n a(n)
0 1
1 1
2 2
3 15
4 107
5 1164
6 13932
7 207527
8 3424441
9 65365273
10 1366815507
11 31899555046
12 806153628997
13 22260455705106
14 659196741236329
15 21028295211402871
16 713819243969142111
17 25836118882427921161
18 988875977638287049631
19 40043648314495526922945

[1,1,2,15,107,1164,13932,207527,3424441,65365273,
 1366815507,31899555046,806153628997,
 22260455705106,659196741236329,21028295211402871,
 713819243969142111,25836118882427921161,
 988875977638287049631,40043648314495526922945]

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Last modified April 25 05:18 EDT 2024. Contains 371964 sequences. (Running on oeis4.)