654192

Appears in sequences

• Expansion of 1/((1-2x)(1-5x)(1-7x)(1-10x)).at n=5A025994
• Number of primitive (period n) periodic palindromes using a maximum of four different symbols.at n=17A056495
• Main diagonal of triangular array T: T(j,1) = 1 for ((j-1) mod 8) < 4, else 0; T(j,k) = T(j-1,k-1)+T(j,k-1) for 2 <= k <= j.at n=20A129961
• Row sums of triangular array T: T(j,1) = 1 for ((j-1) mod 8) < 4, else 0; T(j,k) = T(j-1,k-1) + T(j,k-1) for 2 <= k <= j.at n=19A131076