58091

Appears in sequences

• Numbers k such that sigma(phi(sigma(k))) = phi(sigma(phi(k))).at n=22A067160
• Composite solutions of the form 4k+3 of the equation (*): sigma(phi(sigma(x)))=phi(sigma(phi(x))).at n=4A112017
• Numerator of Hermite(n, 11/12).at n=5A159486
• Equals two maps: number of nX3 binary arrays indicating the locations of corresponding elements equal to exactly two of their horizontal and vertical neighbors in a random 0..1 nX3 array.at n=5A220239
• T(n,k)=Equals two maps: number of nXk binary arrays indicating the locations of corresponding elements equal to exactly two of their horizontal and vertical neighbors in a random 0..1 nXk array.at n=30A220242
• T(n,k)=Equals two maps: number of nXk binary arrays indicating the locations of corresponding elements equal to exactly two of their horizontal and vertical neighbors in a random 0..1 nXk array.at n=33A220242
• Numbers k such that (85*10^k - 1)/3 is prime.at n=20A289942
• Numbers k such that A033461(k) is divisible by k.at n=39A304028