Alternate prime and composite numbers not included earlier such that every partial concatenation is a prime: a(2n) is composite and a(2n-1) is prime.

A088614

Alternate prime and composite numbers not included earlier such that every partial concatenation is a prime: a(2n) is composite and a(2n-1) is prime.

Terms

    a(0) =2a(1) =9a(2) =3a(3) =27a(4) =11a(5) =51a(6) =13a(7) =33a(8) =41a(9) =93a(10) =31a(11) =99a(12) =29a(13) =63a(14) =1117a(15) =441a(16) =503a(17) =303a(18) =163a(19) =171a(20) =59a(21) =357a(22) =67a(23) =219a(24) =113a(25) =417a(26) =691a(27) =729a(28) =239a(29) =511

External references