68961

Appears in sequences

• a(n) = floor( a(n-1)/a(1) + a(n-3)/a(3) + a(n-5)/a(5) + ... ), for n >= 3 with a(1) = 1 and a(2) = 3.at n=40A022877
• Triangular matrix T, read by rows, that satisfies T^2 = A105615^3; also equals the matrix cube of triangle A105623.at n=40A105626
• Sqrt(sigma(A008847(n)^2)), where A008847 lists m such that sigma(m^2) is a square.at n=10A163763
• a(n) = Sum_{k=1..n} gcd(k, n)^3.at n=40A343497
• Numbers whose binary and maximal Lucas representations are both palindromic.at n=15A351718