209365domain: NAppears in sequencesa(n) = a(n-1) + a(n-5); a(0) = ... = a(4) = 1.at n=46A003520Expansion of 1/(1 -x^5 -x^6 -x^7 - ...).at n=51A017899Sum C(n-4k,k-1), k=0..floor(n/5).at n=50A099562Expansion of 1/(1 - x - 2*x^3 - x^5).at n=23A193147Number of compositions of 5*n-4 into parts 1 and 5.at n=9A369839