648025

Appears in sequences

• Squares of second pentagonal numbers: a(n) = (1/4)*n^2*(3*n+1)^2.at n=23A100256
• Squares k such that, if k has d digits, k has at least one digit in common with every other d-digit square.at n=30A173943
• Abundances of A188484(n).at n=13A188487
• Abundances of numbers in A188486.at n=1A188488
• Number of n X 4 0..1 arrays avoiding 0 0 0 and 0 1 1 horizontally and 0 0 1 and 0 1 1 vertically.at n=17A207364
• Trajectory of 86 under repeated application of the map k -> A320486(k^2).at n=5A321011
• Trajectory of 86 under repeated application of the map k -> A320486(k^2).at n=15A321011
• Trajectory of 86 under repeated application of the map k -> A320486(k^2).at n=25A321011
• Trajectory of 86 under repeated application of the map k -> A320486(k^2).at n=35A321011