986328

Appears in sequences

• Appending a digit to n^2 gives another perfect square.at n=27A031150
• Numbers k such that 10*k^2 + 9 is a square.at n=12A075836
• Numerators of convergents to 3/(1 + sqrt(10)).at n=23A093611
• Expansion of -x*(x+1)^2*(x^8-2*x^7+2*x^6-3*x^5+3*x^4+2*x^2-x+1) / (x^12+6*x^6-1).at n=45A121795
• Numerators in convergents to infinitely repeating period 3 palindromic continued fraction [1,2,1,...].at n=23A179238
• a(n) = 6*a(n-2) + a(n-4), where a(0) = 3, a(1) = 11, a(2) = 18, a(3) = 68.at n=14A228470
• Triangle read by rows: T(n,m) is the number of length n decorated permutations avoiding the word 0^m = 0...0 of m 0's, where 1 <= m <= n.at n=42A334156