66263

Appears in sequences

• Number of atoms in a decahedron with n shells.at n=43A004068
• a(n) = a(n-1) + 7*a(n-2), a(0)=0, a(1)=1.at n=11A015442
• Numbers such that the sequence of all possible sums of divisors of n is increasing but not strictly so, the sums being ordered by their characteristic functions, seen as binary numbers (see example).at n=25A230492
• Quasi-Carmichael numbers to at least one negative base and at least one positive base.at n=15A257759
• Number of binary strings of length n+6 such that the smallest number whose binary representation is not visible in the string is 6.at n=18A261442
• Number of fixed site animals with n nodes on the nodes of the rhombille tiling.at n=8A378416