Number of second differences of arrays of length n+2 of numbers in 0..7.

A228217

Number of second differences of arrays of length n+2 of numbers in 0..7.

Terms

    a(0) =29a(1) =519a(2) =7309a(3) =88215a(4) =951049a(5) =9399615a(6) =86929081a(7) =766106895a(8) =6537612649a(9) =54701587935a(10) =452558355481

External references