36531

Appears in sequences

• Numbers whose sum of the squares of divisors is also a square number.at n=16A046655
• McKay-Thompson series of class 14c for Monster.at n=17A058507
• Number of n X n binary arrays with all ones connected only in a 11011-01110-00100 pattern in any orientation.at n=8A147481
• Number of n X n binary arrays symmetric under horizontal and vertical reflection with all ones connected only in a 11011-01110-00100 pattern in any orientation.at n=19A147483
• Eleven times hexagonal numbers: a(n) = 11*n*(2*n-1).at n=41A154617
• a(n) = gcd(t(n), t(n-1)), where t is A200218.at n=1A200582
• Numbers x such that sigma(x) = rev(sigma*(x)), where sigma(x) is the sum of the divisors of x, sigma*(x) the sum of the anti-divisors of x and rev(x) the reverse of x.at n=2A248787
• Partial sums of the number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 209", based on the 5-celled von Neumann neighborhood.at n=37A270893
• Partial sums of the number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 491", based on the 5-celled von Neumann neighborhood.at n=35A272541
• a(n) = a(n-1) + 3*a(n-2) -2*a(n-3) - 2*a(n-4), where a(0) = 0, a(1) = -1, a(2) = 1, a(3) = 1.at n=20A295726
• a(n) = a(n-1) + 3*a(n-2) -2*a(n-3) - 2*a(n-4), where a(0) = -1, a(1) = 0, a(2) = 0, a(3) = 1.at n=21A295730
• a(n) = a(n-1) + 3*a(n-2) -2*a(n-3) - 2*a(n-4), where a(0) = 0, a(1) = 0, a(2) = 2, a(3) = 1.at n=21A295850