262829

Appears in sequences

• a(n) = a(n-1) + a(n-2) - [a(n-2)/4] - [a(n-4)/2] - [a(n-6)/4].at n=45A173599
• a(n) = 2^n + 2*n^2 + 2*n + 1.at n=18A321123