24548

Appears in sequences

• Numbers k such that 30*R_k + 1 is prime, where R_k = 11...1 is the repunit (A002275) of length k.at n=27A055520
• a(n) = 3*2^n - 2*n - 2.at n=13A097813
• a(n) = n*(n+1)*(n+2)*(n+4)*(n+23)/120.at n=14A101855
• Least K such that K*(prime(100*n)^(100*n))-1 is prime with prime(n)=n-th prime.at n=18A129245
• Triangular sequence defined by T(n, m) = (r^(n-m)*q^m + r^m*q^(n-m))*b(n), where b(n) = coefficients of p(x, n) = 2^n*(1-x)^(n+1) * LerchPhi(x, -n, 1/2), and r=2, q=1.at n=22A154695
• Triangular sequence defined by T(n, m) = (r^(n-m)*q^m + r^m*q^(n-m))*b(n), where b(n) = coefficients of p(x, n) = 2^n*(1-x)^(n+1) * LerchPhi(x, -n, 1/2), and r=2, q=1.at n=26A154695
• a(n) = 17*n^2.at n=38A244630
• Numbers n such that n!3 + 3^7 is prime, where n!3 = n!!! is a triple factorial number (A007661).at n=35A265200
• Positions k where A348733(k) is not multiplicative.at n=26A348740
• Row sums of triangle A360173.at n=14A360229