A050239 Consecutive square palindromic primes; palindromic primes of the form x^2 + (x+1)^2, where x values are given by A050236.

5, 181, 313, 3187813

Offset: 1

Author

Eric W. Weisstein

Keywords

• nonn
• nice
• hard
• base
• more

Comments

No other terms < 10^20. - Patrick De Geest, Aug 15 1999

Links

• Patrick De Geest, Palindromic Sums of Squares of Consecutive Integers
• Carlos Rivera, Puzzle 14. Pal-Primes and sum of powers, The Prime Puzzles & Problems Connection.
• Eric Weisstein's World of Mathematics, Palindromic Prime

Crossrefs

Cf. A050236.

Subsequence of A002385.

Programs

Mathematica

Select[Total/@Partition[Range[1300]^2,2,1],PalindromeQ[#]&&PrimeQ[#]&] (* Harvey P. Dale, Aug 19 2022 *)