149159936

Appears in sequences

• a(n) = ((5 + sqrt(18))*(4 + sqrt(8))^n + (5 - sqrt(18))*(4 - sqrt(8))^n)/2.at n=9A164594
• a(n) = 4^n*(1 + (23/8)*n + (9/8)*n^2).at n=10A361609