190512

Appears in sequences

• Largest k > 1 such that (sum of digits of k^n)*(sum of digits of k^(n+1)) = k, or 0 if no such k exists.at n=16A130181
• a(n) = n^5*(n+1)^2/2.at n=6A163275
• Mirror of the triangle A193724.at n=48A193725
• Area A of the bicentric quadrilaterals such that A, the sides, the radius of the circumcircle and the radius of the incircle are integers.at n=9A219192
• Conductor of the elliptic curve y^2 = x^3 - n.at n=20A356731
• Triangle read by rows: T(n, k) = floor(binomial(n, k - 1) * (k - 1)^(k - 1) * n * (n - k + 1)^(n - k) / 2).at n=30A369072
• Orders of Origami monoid on n strings constructed from the Jones monoid on n strings.at n=5A380196