139920

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=23A031695
• a(n) = 289n^2 + 2n.at n=21A158254
• Number of compositions of odd natural numbers into 4 parts <= n.at n=22A191903
• Smallest palindromic numbers of length 4 in two bases differing by n.at n=22A216843
• Number of length n+3 0..2 arrays with at most one downstep in every n consecutive neighbor pairs.at n=21A255110
• Numbers k such that 8*10^k + 51 is prime.at n=29A287296
• Expansion of e.g.f. (1/x) * Series_Reversion( x + 1 - exp(x^2) ).at n=6A392788