39215

Appears in sequences

• Numbers k such that the least term in the periodic part of the continued fraction for sqrt(k) is 36.at n=10A031714
• Numbers k that divide 7^k + 3^k.at n=34A045586
• Numbers k such that sigma(k) = phi(k+1) + phi(k) + phi(k-1).at n=18A065986
• Integers that are Rhonda numbers to base 8.at n=11A100970
• Conjectured lower bound for the number of spheres of radius 1 that can be packed in a sphere of radius n.at n=36A121346
• a(n) = 121*n^2 + 11.at n=18A158536
• a(n) = Fibonacci(n)^3 + (-1)^n*Fibonacci(n+2).at n=9A220363
• a(n) = (7^(n+1) - 4) / 3.at n=5A233326
• a(n) = n*(n+1)*(22*n-19)/6.at n=22A256716
• a(n) = n*(n + 1)*(n^2 - n + 3)/6.at n=22A257055
• Sequences n*(n+1)*(6*n+1)/2 and n*(n+1)*(7*n+1)/2 interleaved.at n=44A296636
• Numbers k such that s(k) = s(k+1), where s(k) is A059975.at n=20A327250
• a(n) is the number in the first column of the Trithoff (tribonacci) array that starts off the row containing the tail of n times the tribonacci sequence.at n=22A351689