88218

Appears in sequences

• Numbers k such that the least term in the periodic part of the continued fraction for sqrt(k) is 66.at n=8A031744
• House numbers (version 2): a(n) = (n+1)^3 + (n+1)*Sum_{i=0..n} i.at n=38A050509
• a(n) = 81*n^2 + 9.at n=32A157888
• a(n) is the smallest integer that can appear as the n-th term of two distinct nondecreasing sequences of positive integers that satisfy the Fibonacci recurrence relation.at n=13A286983
• 9 + 8*a(n) appears in a congruence which determines representative parallel primitive binary quadratic forms for discriminant 9*m(n)^2 - 4 and representation -m(n)^2, where m(n) = A002559(n) (Markoff numbers).at n=9A327344