35336530286domain: NAppears in sequencesa(n) = floor(concatenation of n+5, n+4, n+3, n+2, n+1 and n divided by 6).at n=16A075007A192392(n)/n = largest m such that m*n is a concatenation of the numbers n(n-1)/2+1,...,n(n+1)/2.at n=5A193380