153560

Appears in sequences

• Numbers n such that n^2 + 1, n^2 + 3, n^2 + 7 and n^2 + 9 are all primes.at n=10A057015
• Number of squares (of nonnegative integers) that require n binary (base-2) digits.at n=38A126726
• Number of triangular numbers T(k) between powers of 2, 2^(n-1) < T(k) <= 2^n.at n=37A190660