9090909090

Appears in sequences

• Number of aperiodic necklaces of n beads of 10 colors.at n=10A032165
• a(n) = floor(10^n/n).at n=10A060156
• a(n) = A066557(n)/n.at n=10A066558
• Number of sequences of length n with terms from {0,1,...,n-1} such that the sum of terms is 0 modulo n and the i-th term is not i.at n=10A173499
• Number of n-length cycles from any point in a complete graph on n nodes.at n=9A185634
• Numbers with the property that all pairs of consecutive digits differ by 9.at n=17A198486
• Number of n-bead necklaces of n colors not allowing reversal, with no adjacent beads having the same color.at n=10A208533
• List of numbers k whose consecutive digits increase or decrease by d-1, where d is the number of digits in k.at n=130A292439
• a(n) = (n^11 - n)/11.at n=10A366488