Number of products of distinct primes <= p(n) equal to 1 (mod p(n)).

Terms

a(0) =1a(1) =1a(2) =2a(3) =2a(4) =2a(5) =4a(6) =5a(7) =7a(8) =13a(9) =19a(10) =36a(11) =56a(12) =102a(13) =193a(14) =350a(15) =642a(16) =1131a(17) =2191a(18) =3975a(19) =7480a(20) =14540a(21) =27004a(22) =51067a(23) =95327a(24) =174777a(25) =335535a(26) =658017a(27) =1266162a(28) =2485494a(29) =4793475