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

A168023

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

Terms

    a(0) =1a(1) =61a(2) =139a(3) =1009a(4) =1279a(5) =2281a(6) =3109a(7) =3571a(8) =4591a(9) =6361a(10) =8419a(11) =13399a(12) =14341a(13) =17359a(14) =19531a(15) =23029a(16) =35251a(17) =39901a(18) =44839a(19) =46549a(20) =51871a(21) =55579a(22) =61381a(23) =73849a(24) =76039a(25) =102241a(26) =110059a(27) =135241a(28) =153469a(29) =156619

External references