Composites in base 10 that remain composite in exactly three bases b, 2 <= b <= 10, expansions interpreted as decimal numbers.

A256355

Composites in base 10 that remain composite in exactly three bases b, 2 <= b <= 10, expansions interpreted as decimal numbers.

Terms

    a(0) =11233a(1) =42241a(2) =98281a(3) =131239a(4) =161953a(5) =315151a(6) =358135a(7) =606553a(8) =692263a(9) =785851a(10) =1114081a(11) =1130419a(12) =1525777a(13) =1906363a(14) =3369313a(15) =3403081a(16) =3880873a(17) =5616721a(18) =6036103a(19) =6947611a(20) =7253191a(21) =7516783a(22) =7886593a(23) =8799127a(24) =8811223a(25) =9108289a(26) =9113203a(27) =9195313a(28) =9450361a(29) =9600769

External references