For each possible representation of n as n = 2nb + 3nu + K with nb, nu, K nonnegative integers, add numbers K, K+1, ..., 2K except for 2K-1 into a multiset. a(n) is the size of the resulting multiset minus the number of distinct numbers in it.

A090666

For each possible representation of n as n = 2*nb + 3*nu + K with nb, nu, K nonnegative integers, add numbers K, K+1, ..., 2*K except for 2*K-1 into a multiset. a(n) is the size of the resulting multiset minus the number of distinct numbers in it.