105625

Appears in sequences

• Sum of first n cubes; or n-th triangular number squared.at n=25A000537
• Squares formed by concatenating other squares, not ending in 0.at n=36A009404
• Squares of odd triangular numbers.at n=12A014736
• Squares of odd hexagonal numbers.at n=6A014771
• Least positive integer that is the sum of two squares of positive integers in exactly n ways.at n=6A016032
• a(n) = (8*n + 5)^2.at n=40A017126
• a(n) = (10*n + 5)^2.at n=32A017330
• a(n) = (11*n + 6)^2.at n=29A017462
• a(n) = (12*n + 1)^2.at n=27A017534
• Smallest k such that circle x^2 + y^2 = k passes through exactly 4n integer points.at n=14A018782
• Numbers that are the sum of 2 nonzero squares in exactly 7 ways.at n=0A025290
• Numbers that are the sum of 2 nonzero squares in 7 or more ways.at n=29A025298
• Numbers that are the sum of 2 distinct nonzero squares in exactly 7 ways.at n=0A025308
• Numbers that are the sum of 2 distinct nonzero squares in 7 or more ways.at n=29A025317
• Numbers of the form q1^b1 * q2^b2 * q3^b3 * q4^b4 * q5^b5 * ... where q1=5, q2=13, q3=17, q4=29, q5=37, ... (A002144) and b1 >= b2 >= b3 >= b4 >= b5 >= ....at n=20A054994
• Binary string self-substitutions: a(n) is obtained by substituting the binary expansion of n for each 1-bit in the binary expansion of n.at n=25A065159
• Squares k^2 such that A068864(k) = k^2.at n=27A068867
• Squares which when reversed are primes (ignore leading zeros).at n=31A068989
• Let m = Wonderful Demlo number A002477(n); a(n) = square of the sum of digits of m.at n=36A080150
• Main diagonal of A082043: a(n) = n^4 + 2*n^2 + 1.at n=18A082044