Quasi-Carmichael numbers to base -2: squarefree composites n such that for every prime p that divides n, p+2 divides n+2.

A029562

Quasi-Carmichael numbers to base -2: squarefree composites n such that for every prime p that divides n, p+2 divides n+2.

Terms

    a(0) =598a(1) =3913a(2) =11590a(3) =32578a(4) =91078a(5) =95170a(6) =154843a(7) =179998a(8) =301273a(9) =317623a(10) =668743a(11) =1742830a(12) =1806673a(13) =2486482a(14) =2517226a(15) =4543423a(16) =5013853a(17) =5237230a(18) =6360523a(19) =6704773a(20) =7342162a(21) =8810503a(22) =10775833a(23) =12858118a(24) =16650478a(25) =18183823a(26) =19230433a(27) =21381358

External references