1677025

Appears in sequences

• a(n) = (4*n^2 - 1)^2.at n=18A069075
• Denominator of 1/n^2-1/(n+2)^2.at n=35A171522
• 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=23A255893
• Array read by antidiagonals: T(m,n) = number of total dominating sets in the grid graph P_m X P_n.at n=39A303111
• Array read by antidiagonals: T(m,n) = number of total dominating sets in the grid graph P_m X P_n.at n=41A303111
• Squares whose arithmetic mean of digits is 4 (i.e., the sum of digits is 4 times the number of digits).at n=27A316484
• Numbers k such that (65*k)^2 can be represented in exactly 4 ways as the sum of a positive square and a positive fourth power.at n=27A346594