59656

Appears in sequences

• Indices of prime Cullen numbers: numbers k such that k*2^k + 1 is prime.at n=8A005849
• Numbers k such that k and k^2 use only the digits 3, 5, 6, 8 and 9.at n=8A137134
• Number of 2 X 2 matrices having all terms in {1,...,n} and determinant >=3n.at n=21A211063
• Numbers k such that (k*2^d + 1)*(d*2^k + 1) is semiprime for some divisor d of k.at n=20A382887