713216

Appears in sequences

• a(n) = 4*a(n-1) + 4*a(n-2), a(0)=1, a(1)=2.at n=9A084128
• a(n) is the self-convolution series of the sum of 5th powers of the first n natural numbers.at n=5A145218
• a(n) = ((4 + sqrt(18))*(4 + sqrt(8))^n + (4 - sqrt(18))*(4 - sqrt(8))^n)/8 .at n=7A164591