700569

Appears in sequences

• Squares with initial digit '7'.at n=26A045791
• Smallest n-digit square starting with 7.at n=3A067477
• Squares pertaining to A082607. a(n) = A082607(n)*A082607(n+1)- 1.at n=21A082608
• Denominator of 1/(n-2)^2 - 1/(n+2)^2.at n=27A171638
• a(n) = A061037(n)^2.at n=27A181763
• Squares representable as k*m + k + m, where k >= m > 1 are squares.at n=38A256074
• Numbers k with the property that it is possible to write the base 2 expansion of k as concat(a_2,b_2), with a_2>0 and b_2>0 such that, converting a_2 and b_2 to base 10 as a and b, we have (a+b)^2 = k.at n=29A258844
• Squares that remain squares if you decrease them by 3 times a repunit with the same number of digits.at n=11A273230
• Least sum s of consecutive prime numbers starting with prime(n) such that s is a perfect square.at n=15A287027
• a(n) is the smallest number m such that tau(m - 1) = tau(m + 1) = tau(m) + n or 0 if no such m exists, where tau(k) = A000005(k).at n=11A350934