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A155197 as a simple table

n a(n)
0 1
1 7
2 56
3 455
4 3696
5 30023
6 243880
7 1981063
8 16092384
9 130720135
10 1061853464
11 8625547847
12 70066236240
13 569155437767
14 4623309738376
15 37555633344775
16 305068376496576
17 2478102645317383
18 20129889539035640
19 163517218957602503

[1,7,56,455,3696,30023,243880,1981063,16092384,
 130720135,1061853464,8625547847,70066236240,
 569155437767,4623309738376,37555633344775,
 305068376496576,2478102645317383,
 20129889539035640,163517218957602503]

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Last modified May 17 22:15 EDT 2021. Contains 343992 sequences. (Running on oeis4.)