81761

Properties

Appears in sequences

• Primes with 12 as smallest positive primitive root.at n=27A061325
• Partial sums of A001158: Sum_{j=1..n} sigma_3(j).at n=22A064603
• Rectangular array, read by antidiagonals, where row e.g.f.s, R(n,x), satisfy: d/dx log( R(n,x) ) = R(n+1,x)^(2^n) with R(n,0) = 1; that is, the logarithmic derivative of the e.g.f. of row n equals the e.g.f. of row n+1 to the 2^n power, for n>=0.at n=40A159314
• a(n)/2^(n^2) is the coefficient of x^n/n! in F(x)^(1/2^n) where F(x) is the e.g.f. of A159315.at n=4A159317
• Primes p whose smallest positive primitive root (mod p) is not squarefree.at n=29A205581
• Primes that can be generated by the concatenation in base 9, in ascending order, of two consecutive integers read in base 10.at n=32A287312
• Prime numbersat n=7997