1594296

Appears in sequences

• Number of primitive (aperiodic) palindromes using a maximum of three different symbols.at n=24A056459
• Number of primitive (period n) periodic palindromes using a maximum of three different symbols.at n=24A056494
• a(n) = 3^n - 2*n - 1.at n=13A061981
• Irregular table read by rows: T(n,k) is the number of k-gons, k>=3, formed in a square with edge length 1 by straight line segments when connecting the internal edge points that divide the sides into segments with lengths equal to the Farey series of order n to the equivalent points on the opposite side of the square.at n=47A359656