A115743 Squares that are the product of 2 palindromes greater than 1.

4, 9, 16, 25, 36, 49, 64, 81, 121, 484, 1089, 1764, 1936, 2401, 2704, 3025, 4356, 5929, 6084, 7744, 9801, 10201, 12321, 14641, 17161, 19881, 22801, 25921, 27225, 29241, 32761, 36481, 40804, 44944, 49284, 53824, 58564, 63504, 68644, 69696

Offset: 1

Author

Giovanni Resta, Jan 31 2006

Keywords

• nonn
• base

Comments

Are most terms of the form p^2 where p is a palindrome? - David A. Corneth, May 25 2021

Examples

			6084 = 78^2 and 6084 = 9*676.
		

Links

• David A. Corneth, Table of n, a(n) for n = 1..13971 (terms <= 10^15)

Crossrefs

Cf. A014186, A115683, A115744, A115745.

Programs

Mathematica

With[{nn=50000},Select[Union[Select[Times@@@Tuples[Select[Range[2,nn],PalindromeQ],2],IntegerQ[ Sqrt[ #]]&]],#<=2 nn&]] (* Harvey P. Dale, Aug 21 2022 *)