Smallest value of k for which 6*k+1 divides the subset of centered hexagonal terms included in A177019 that admit only factors like 6*k+1.

A178509

Smallest value of k for which 6*k+1 divides the subset of centered hexagonal terms included in A177019 that admit only factors like 6*k+1.

Terms

    a(0) =1a(1) =55a(2) =26a(3) =5a(4) =50005000a(5) =1a(6) =1a(7) =16a(8) =1936a(10) =15333927a(11) =1a(12) =1a(13) =18316a(14) =3a(15) =7a(16) =1526a(17) =1a(18) =1a(19) =12a(20) =73a(21) =38a(22) =47a(23) =1a(24) =1a(25) =121a(26) =43502a(27) =12a(28) =11a(29) =1a(30) =1

External references