Integer part of n#/((p-7)# 7#), where p=preceding prime to n.

Terms

a(0) =0a(1) =0a(2) =0a(3) =0a(4) =1a(5) =4a(6) =11a(7) =19a(8) =35a(9) =3a(10) =4a(11) =5a(12) =7a(13) =310a(14) =394a(15) =11a(16) =14a(17) =17a(18) =19a(19) =22a(20) =1653a(21) =27a(22) =31a(23) =35a(24) =0a(25) =46a(26) =4805a(27) =5300a(28) =5720a(29) =6275