53590

Appears in sequences

• The maximum length of a string of identical characters which can be reduced to one character in "n" nested substitution operations, e.g. replace(string, substring, character) such that all shorter strings will also reduce to one character.at n=5A159860
• Coefficient of x in the reduction by (x^3 -> x + 1) of the polynomial F(n+1)*x^n, where F(n)=A000045 (Fibonacci sequence).at n=12A192912
• -2-Knödel numbers.at n=37A225506
• Number of (n+1) X (n+1) 0..4 arrays with every 2 X 2 subblock having its diagonal sum differing from its antidiagonal sum by 4, with no adjacent elements equal (constant-stress tilted 1 X 1 tilings).at n=5A235079
• Number of (n+1) X (6+1) 0..4 arrays with every 2 X 2 subblock having its diagonal sum differing from its antidiagonal sum by 4, with no adjacent elements equal (constant-stress tilted 1 X 1 tilings).at n=5A235085