47508domain: NAppears in sequencesa(n) = Sum_{k=0..floor(n/2)} binomial(n-k,k+1) * 3^(n-k-1)*(4/3)^k.at n=8A099621Numbers k such that A003132(k^3) = A003132(k), where A003132(n) is the sum of the squares of the digits of n.at n=13A309884Number of binary words of length n with all distinct runs.at n=22A351016