68644

Appears in sequences

• Squares of palindromes.at n=35A014186
• a(n) = (8*n+6)^2.at n=32A017138
• a(n) = (9*n + 1)^2.at n=29A017174
• a(n) = (10*n + 2)^2.at n=26A017294
• a(n) = (11*n + 9)^2.at n=23A017498
• a(n) = (12*n+10)^2.at n=21A017642
• Squares which are palindromes in base 3.at n=17A029985
• Squares whose digits are all even.at n=14A030098
• Squares with initial digit '6'.at n=26A045789
• Squares composed of digits {4,6,8}.at n=4A053959
• Squares that are the concatenation of three numbers, one of which is the sum of the other two.at n=10A062555
• a(n) = 4*prime(n)^2.at n=31A069262
• Squares which repeat with at least two full periods when written in base 3.at n=6A071129
• a(1) = 0, then smallest square such that a(n+1) - a(n) is a palindrome.at n=10A075056
• Even-digit perfect powers.at n=17A075787
• Perfect powers using only composite digits 4,6,8,9 and 0.at n=26A083807
• Squares whose digits are all positive and even.at n=7A103751
• Corresponds to m = 7 in a family of 4th-order linear recurrence sequences given by a(m,n) = m^4*a(n-4) + (2*m)^2*a(n-3) - 4*a(m-1), a(m,0) = -1, a(m,1) = 4, a(m,2) = -13 + 6*(m-1) + 3*(m-1)^2, a(m,3) = (-8+m^2)^2.at n=5A113253
• Squares that are the product of 2 palindromes greater than 1.at n=38A115743
• Squares for which the sum of the digits is a triangular number.at n=25A118488