91920

Appears in sequences

• Determinant of n X n matrix defined by m(i,j) = 0 if i+j is a prime, m(i,j) = 1 otherwise.at n=33A071063
• Integers k such that 10^k - 39 is prime.at n=20A108365
• E.g.f.: Sum_{n>=0} (exp(2^n*x) - 1)^n/n!, an analog of the Bell numbers (A000110).at n=4A168407
• Number of genus 4, degree n, simply ramified covers of an elliptic curve.at n=2A170993
• a(n) = Sum_{i=0..n} Stirling2(n,i)*2^(4i).at n=4A221176