6293134513

Appears in sequences

• Least positive integer k such that the fractional part of k*sqrt(5) has its n initial partial quotients all equal to 1.at n=23A004794
• a(n+3) = 3*a(n+2) + 5*a(n+1) + a(n), a(0) = 1, a(1) = 2, a(2) = 11.at n=16A110679
• Expansion of (1 + x)^2/((1 + x + x^2)*(1 + 3*x + x^2)).at n=24A113066
• Indices of centered pentagonal numbers (A005891) that are also triangular numbers (A000217).at n=16A254627
• a(n) = (Fibonacci(3*n-1) + 1)/2 for n >= 1.at n=16A292278
• Expansion of (1 - x + x^2)/((1 - x + x^2)^2 - 4*x^2).at n=24A376716
• Upper (1/2)-midsequence of (F(2n)) and (F(2n+1)), where F=A000045 (Fibonacci numbers); see Comments.at n=24A387779