Noncomposite numbers in the southern ray of the Ulam spiral as oriented on the March 1964 cover of Scientific American.

A168027

Noncomposite numbers in the southern ray of the Ulam spiral as oriented on the March 1964 cover of Scientific American.

Terms

    a(0) =1a(1) =23a(2) =163a(3) =281a(4) =431a(5) =613a(6) =827a(7) =2003a(8) =2377a(9) =3221a(10) =3691a(11) =6521a(12) =7877a(13) =10151a(14) =10973a(15) =11827a(16) =12713a(17) =17623a(18) =18701a(19) =23333a(20) =24571a(21) =25841a(22) =27143a(23) =28477a(24) =38711a(25) =43577a(26) =45263a(27) =48731a(28) =50513a(29) =65921

External references