670761

Appears in sequences

• Squares of odd square pyramidal numbers.at n=6A014797
• Squares such that digits of sqrt(n) are not present in n^(3/2).at n=19A029788
• Odd squares in which parity of digits alternates.at n=33A030156
• Squares with property that digits alternate in parity individually as well as in concatenation with previous terms.at n=25A068888
• Smallest number having n divisors ending with 1 or 9.at n=22A085645
• a(n) = ((n+1)*(2*n-1))^2.at n=20A123198
• Number of subsets of {1,2,...,n-12} without differences equal to 2, 4, 6, 8, 10 or 12.at n=66A224813
• Perfect squares k such that each decimal digit of k is equal to the difference of at least two other digits of k.at n=12A255893
• Number of (n+2) X (2+2) 0..1 arrays with each row divisible by 5 and column not divisible by 5, read as a binary number with top and left being the most significant bits.at n=7A262789
• a(n) = ( n*(n + 1)*(2*n + 1)/6 )^2.at n=13A271535
• Smallest number having exactly n divisors ending with 3 or 7.at n=21A331082
• Discriminants with at least 2 associated cyclic cubic fields.at n=30A343024
• Odd squares k, multiples of 3 and non-multiples of 5, such that sigma(k)/k >= 5/3.at n=18A388016