31952

Appears in sequences

• Expansion of F(x) where F(x) = 1 + x / (1 - x * F(x) * F(-x^2) ).at n=15A238426
• Expansion of 1/(1 - Sum_{k>=1} x^(k+floor(1/2+sqrt(k)))).at n=27A280240
• Number of nX3 0..1 arrays with no 1 equal to more than two of its horizontal, vertical and antidiagonal neighbors, with the exception of exactly one element.at n=5A283342
• Number of n X 6 0..1 arrays with no 1 equal to more than two of its horizontal, vertical and antidiagonal neighbors, with the exception of exactly one element.at n=2A283345
• T(n,k)=Number of nXk 0..1 arrays with no 1 equal to more than two of its horizontal, vertical and antidiagonal neighbors, with the exception of exactly one element.at n=30A283347
• T(n,k)=Number of nXk 0..1 arrays with no 1 equal to more than two of its horizontal, vertical and antidiagonal neighbors, with the exception of exactly one element.at n=33A283347
• a(n) is the number of semi-meanders with n top arches that have at least one arch with length 1 adjacent to the center of the top arch configuration or at either end of the arch configuration.at n=11A333971
• a(n) is the least base in which the Fibonacci number A000045(n) is a palindrome.at n=58A372754