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A274789 as a simple table

n a(n)
0 1
1 9
2 241
3 9129
4 402321
5 19321689
6 981044401
7 51794295849
8 2814649754641
9 156399050208729
10 8845463571211521
11 507517525088436729
12 29468616564702121041
13 1728353228376135226329
14 102242911938342248555121
15 6093340217607472063134249
16 365501683327659682186607121
17 22049503920365906645420399769

[1,9,241,9129,402321,19321689,981044401,
 51794295849,2814649754641,156399050208729,
 8845463571211521,507517525088436729,
 29468616564702121041,1728353228376135226329,
 102242911938342248555121,
 6093340217607472063134249,
 365501683327659682186607121,
 22049503920365906645420399769]

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Last modified January 28 22:40 EST 2020. Contains 331328 sequences. (Running on oeis4.)