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

A168022

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

Terms

    a(0) =1a(1) =2a(2) =11a(3) =53a(4) =127a(5) =233a(6) =541a(7) =743a(8) =977a(9) =1871a(10) =3511a(11) =4001a(12) =4523a(13) =5077a(14) =9851a(15) =11503a(16) =12377a(17) =14221a(18) =16193a(19) =19391a(20) =20521a(21) =21683a(22) =22877a(23) =24103a(24) =29327a(25) =30713a(26) =33581a(27) =42953a(28) =55343a(29) =57241

External references