74016

Appears in sequences

• Numbers k such that the least term in the periodic part of the continued fraction for sqrt(k) is 17.at n=15A031695
• a(n) = 289n^2 + 2n.at n=15A158254
• Number T(n,k) of tilings of a 5 X n rectangle with pentominoes of any shape and exactly k pentominoes of shape Y; triangle T(n,k), n>=0, read by rows.at n=28A247712
• a(n) = n! * [x^n] (sec(x) + tan(x))^n.at n=6A298244
• a(n) is the smallest k that is equal to the sum of the digits of k*(k+1)*...*(k+n-1) in base 10^n, or -1 if such a number does not exist.at n=4A308408