1420800

Appears in sequences

• a(n) = A062402(2^n-1).at n=18A096854
• a(n) = Trinomial(2*n+1, 4) = (1/6)*n*(2*n + 1)*(2*n^2 + 9*n + 1), n >= 0.at n=37A302709
• Triangle read by rows: T(n,k) is the number of polygons with 2*n sides, of which k run through the center of a circle, on the circumference of which the 2*n vertices of the polygon are arranged at equal spacing.at n=24A330662
• Numbers k for which the repeating part with leading 0's of 1/k in decimal is a palindrome and longer than one digit.at n=11A382638