242064

Appears in sequences

• Squares whose digits are all even.at n=17A030098
• Smallest nontrivial extension of n-th palindrome which is a square.at n=32A030676
• Largest square less than or equal to sum of previous terms.at n=21A061886
• a(1)=0, a(2)=9; then distinct squares such that the sum of three successive terms is a square.at n=6A075373
• Even-digit perfect powers.at n=20A075787
• Numbers k such that sigma(k) - phi(k) is a brilliant number (A078972).at n=32A115917
• Squares such that square-+5 are primes.at n=11A154711
• Numbers of the form p^4*q^2*r^2 where p, q, and r are distinct primes.at n=31A179746
• T(n,k)=Number of nXk arrays of occupancy after each element moves to some horizontal, diagonal or antidiagonal neighbor, with no occupancy greater than 2.at n=37A221200
• Number of 2 X n arrays of occupancy after each element moves to some horizontal, diagonal or antidiagonal neighbor, with no occupancy greater than 2.at n=7A221201
• Numbers k such that phi(k)^phi(k) == 1 (mod sigma(k)).at n=17A248861
• Number of (n+2)X(7+2) 0..1 arrays with every 3X3 subblock diagonal sum plus antidiagonal sum nondecreasing horizontally, vertically and ne-to-sw antidiagonally.at n=20A253840
• Squares whose arithmetic mean of digits is 3 (i.e., the sum of digits is 3 times the number of digits).at n=25A316483
• Squares in whose primorial base expansion only even digits appear.at n=47A328850