254040

Appears in sequences

• Numbers k such that the least term in the periodic part of the continued fraction for sqrt(k) is 42.at n=23A031720
• Shifts left under the "BIK" (reversible, indistinct, unlabeled) transform with a(1) = 2.at n=10A032130
• a(n) = n^5 + 3*n^3 + 2*n = n*(n^2 + 1)*(n^2 + 2).at n=11A120573
• a(n) = 40*(200*n - 49).at n=31A157652
• a(n) = 576*n^2 + 24.at n=21A158637
• Largest area of triangles with integer sides and area = n times perimeter.at n=5A289156