Numbers n such that n+1 and phi(n)+1 are both perfect squares.

Terms

a(0) =15a(1) =24a(2) =35a(3) =143a(4) =168a(5) =323a(6) =575a(7) =675a(8) =728a(9) =899a(10) =1599a(11) =1763a(12) =2600a(13) =3599a(14) =3720a(15) =5183a(16) =5775a(17) =10403a(18) =11663a(19) =19043a(20) =19320a(21) =21315a(22) =22499a(23) =29928a(24) =32399a(25) =36863a(26) =38024a(27) =39203a(28) =47523a(29) =51528