Sum of binomial numbers A000332(k+3), with k in the reduced residue system modulo n.

Terms

a(0) =0a(1) =1a(2) =6a(3) =16a(4) =56a(5) =71a(6) =252a(7) =296a(8) =651a(9) =721a(10) =2002a(11) =1282a(12) =4368a(13) =3402a(14) =5782a(15) =6672a(16) =15504a(17) =7947a(18) =26334a(19) =15702a(20) =28868a(21) =28457a(22) =65780a(23) =30212a(24) =85580a(25) =63063a(26) =103284a(27) =81452a(28) =201376a(29) =66102