5595136

Appears in sequences

• a(n) = (2^(n+1) + (-4)^n)/3.at n=12A083086
• a(n) = - a(n-1) + 5(a(n-2) + a(n-3)) - 2(a(n-4) + a(n-5)) - 8(a(n-6) + a(n-7)).at n=25A090597
• Octagonal numbers equal to S*(3S - 2) with 3S - 2 = k^2 and S semiprime.at n=20A124106