a(n) = prime(n) mod (n+1).

Terms

a(0) =0a(1) =0a(2) =1a(3) =2a(4) =5a(5) =6a(6) =1a(7) =1a(8) =3a(9) =7a(10) =7a(11) =11a(12) =13a(13) =13a(14) =15a(15) =2a(16) =5a(17) =4a(18) =7a(19) =8a(20) =7a(21) =10a(22) =11a(23) =14a(24) =19a(25) =20a(26) =19a(27) =20a(28) =19a(29) =20