86523

Appears in sequences

• a(n) = 6*a(n-1) - a(n-2) for n >= 2, with a(0)=3, a(1)=13.at n=6A038762
• Numbers k such that (k^2 - 7)/2 is a square.at n=12A077443
• a(n) = 2*a(n-1) + a(n-2), with a(0)= -1, a(1)= 3.at n=13A135532
• a(n) = 2*a(n - 2) + a(n - 4) with a(0) = -1, a(1) = 1, a(2) = 3, a(3) = 5.at n=26A266505
• a(n) = 2*a(n-4) + a(n-8) for n >= 8.at n=53A266506
• G.f.: Product_{k>=1, j>=1} (1 + x^(k*j)) / (1 - x^(k*j))^2.at n=13A320238
• Number of partitions of n into 6 or more parts.at n=39A347542