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A012981 as a simple table

n a(n)
0 2
1 13
2 553
3 57839
4 11359153
5 3579398359
6 1655031037177
7 1054978773554159
8 886822655405158113
9 950463966040325692455
10 1265021553451798971633001
11 2047001827823001219625900543
12 3957634961967849174268972586001 

[2,13,553,57839,11359153,3579398359,1655031037177,
 1054978773554159,886822655405158113,
 950463966040325692455,1265021553451798971633001,
 2047001827823001219625900543,
 3957634961967849174268972586001]

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Last modified May 20 16:51 EDT 2024. Contains 372719 sequences. (Running on oeis4.)