Starting with 1, smallest integer not yet in the sequence such that two neighboring digits of the sequence multiply to a prime.

A182271

Starting with 1, smallest integer not yet in the sequence such that two neighboring digits of the sequence multiply to a prime.

Terms

    a(0) =1a(1) =2a(2) =12a(3) =13a(4) =15a(5) =17a(6) =121a(7) =3a(8) =131a(9) =5a(10) =151a(11) =7a(12) =171a(13) =21a(14) =31a(15) =51a(16) =71a(17) =212a(18) =1212a(19) =1213a(20) =1215a(21) =1217a(22) =1312a(23) =1313a(24) =1315a(25) =1317a(26) =1512a(27) =1513a(28) =1515a(29) =1517

External references