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A218679 as a simple table

n a(n)
0 1
1 1
2 5
3 31
4 273
5 2652
6 30071
7 375628
8 5135649
9 75945388
10 1202006514
11 20243446719
12 360517872287
13 6758311053521
14 132833835618576
15 2728019848249377
16 58370987166092073
17 1297916560174624569
18 29924140267551540116
19 713934350929955200551
20 17594768127940813003452

[1,1,5,31,273,2652,30071,375628,5135649,75945388,
 1202006514,20243446719,360517872287,6758311053521,
 132833835618576,2728019848249377,
 58370987166092073,1297916560174624569,
 29924140267551540116,713934350929955200551,
 17594768127940813003452]

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Last modified August 3 19:54 EDT 2021. Contains 346441 sequences. (Running on oeis4.)