543169

Appears in sequences

• Numbers k that divide 7^k + 4^k.at n=21A045592
• Squares of second pentagonal numbers: a(n) = (1/4)*n^2*(3*n+1)^2.at n=22A100256
• 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=26A173943
• Square numbers with at least one digit in common with any other positive square number.at n=16A182657
• Number of n X 4 0..1 arrays avoiding 0 0 0 and 1 0 1 horizontally and 0 0 1 and 0 1 1 vertically.at n=15A208009
• Perfect powers k such that A052409(k) is equal to A052409(A366275(k)).at n=24A366278