205128

Appears in sequences

• Expansion of theta series of E_7 lattice in powers of q^2.at n=19A004008
• Nonzero coefficients in theta series of {E_7}* lattice.at n=38A030443
• Numbers that are proper divisors of the number you get by rotating digits right once.at n=5A034089
• a(n) is the least number with n palindromic divisors.at n=29A087997
• Number of palindromic divisors of a(n) sets a new record.at n=20A093036
• Numbers m with the property that shifting the rightmost digit of m to the left end multiplies the number by 4.at n=5A146569
• Number of 8-step left-handed knight's tours (moves only out two, left one) on an n X n board summed over all starting positions.at n=16A187178
• Number of intersections of diagonals in the exterior of a regular n-gon.at n=41A211382
• Coefficients in expansion of 1/E_10.at n=2A285836
• a(n) is the smallest number whose divisors include exactly n that can be written in the form m + reverse(m), for some m (A067030).at n=34A358513