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A226550 as a simple table

n a(n)
0 0
1 7
2 180
3 1625
4 16936
5 157279
6 1426734
7 12582472
8 108971358
9 929801662
10 7842704798
11 65526395993
12 543197940936
13 4473218574611
14 36628689696182
15 298465716569236
16 2421637058537566
17 19574314969125483
18 157692516088571216
19 1266593481935599039
20 10146033357194978996

[0,7,180,1625,16936,157279,1426734,12582472,
 108971358,929801662,7842704798,65526395993,
 543197940936,4473218574611,36628689696182,
 298465716569236,2421637058537566,
 19574314969125483,157692516088571216,
 1266593481935599039,10146033357194978996]

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Last modified September 23 19:44 EDT 2021. Contains 347617 sequences. (Running on oeis4.)