26967

Appears in sequences

• Numbers k such that the period of the continued fraction for sqrt(k) contains exactly 15 ones.at n=36A031783
• Main diagonal of array A255551.at n=29A255550
• Expansion of q^(-2/5) * (r(q) - r(q^11))^12 in powers of q where r() is the Rogers-Ramanujan continued fraction.at n=18A285580
• On a spirally numbered square grid, with labels starting at 1, this is the number of steps that a (1,n) leaper makes before getting trapped, or -1 if it never gets trapped.at n=5A323469
• Triangle read by rows: T(m,n) (1 <= n < m) is the number of moves of an (m,n)-leaper (a generalization of a chess knight) until it can no longer move, starting on a board with squares spirally numbered from 1. Each move is to the lowest-numbered unvisited square. T(m,n) = -1 if the path never terminates.at n=10A323749
• Triangle read by rows: T(m,n) is the label of the ending square of an (m,n)-leaper (a generalization of a chess knight) when it can no longer move, starting on a board with squares spirally numbered, starting at 1; 1 <= n < m. Each move is to the lowest-numbered unvisited square.at n=39A323750
• For n >= 2, a(n) = a(n-1) + a(n-2) + A051697(n), a(0)=0, a(1)=1.at n=19A363707
• Numbers k such that k - A067666(k) is a square.at n=46A386304