55780810

Appears in sequences

• a(n) = 4*a(n-1) + a(n-2), n>=2, a(0) = 2, a(1) = 7.at n=12A097924
• a(n) = 2*a(n-1) - a(n-2) + a(n-4) for n>3, a(0)=2, a(1)=3, a(2)=5, a(3)=7, a sequence related to Lucas numbers.at n=36A291660