a(n) is the smallest composite squarefree number k such that (p+n) | (k+1) for all primes dividing k.

A274446

a(n) is the smallest composite squarefree number k such that (p+n) | (k+1) for all primes dividing k.

Terms

    a(0) =399a(1) =299a(2) =55a(3) =611a(4) =143a(5) =5549a(6) =39a(7) =155a(8) =493a(9) =615383a(10) =713a(11) =3247a(12) =119a(13) =1304489a(14) =1333a(15) =31415a(16) =2599a(17) =749a(18) =2183a(19) =440153a(20) =155a(21) =75499a(22) =119a(23) =168600949a(24) =4223a(25) =223649a(26) =559a(27) =66299a(28) =6407a(29) =15157

External references