13836446

Appears in sequences

• a(n) = n^5 - n^4 + n^3 - n^2 + n - 1.at n=27A062159
• a(n) = 3*a(n-1) - a(n-3) + 3*a(n-4), with initial values 0,0,0,1.at n=18A133405