Integers in Ulam's spiral for which the numbers around them form a square whose four corners are all prime numbers.

A383596

Integers in Ulam's spiral for which the numbers around them form a square whose four corners are all prime numbers.

Terms

    a(0) =71a(1) =95a(2) =353a(3) =701a(4) =767a(5) =1151a(6) =1451a(7) =1961a(8) =2507a(9) =3347a(10) =4691a(11) =5957a(12) =7205a(13) =9671a(14) =13463a(15) =15635a(16) =21017a(17) =26051a(18) =27947a(19) =28985a(20) =34337a(21) =42017a(22) =49565a(23) =50921a(24) =52253a(25) =52349a(26) =55859a(27) =57191a(28) =63143a(29) =75857

External references