867351

Appears in sequences

• a(n) = 4*a(n-1) - a(n-2), a(0)=1, a(1)=6.at n=10A054491
• Combined Diophantine Chebyshev sequences A054491 and A077234.at n=20A077237
• a(n) = - 4*a(n-2) - a(n-4), a(0) = 1, a(1) = -4, a(2) = -6, a(3) = 15.at n=20A109731