List of integers m>0 with m-1 and m+1 both prime, and m-2, m, m+2 all practical.

A209236

List of integers m>0 with m-1 and m+1 both prime, and m-2, m, m+2 all practical.

Terms

    a(0) =4a(1) =6a(2) =18a(3) =30a(4) =198a(5) =462a(6) =1482a(7) =2550a(8) =3330a(9) =4422a(10) =9042a(11) =11778a(12) =26862a(13) =38610a(14) =47058a(15) =60258a(16) =62130a(17) =65538a(18) =69498a(19) =79902a(20) =96222a(21) =106782a(22) =124542a(23) =143262a(24) =149058a(25) =151902a(26) =184830a(27) =200382a(28) =208962a(29) =225342

External references