A115745 Pentagonal numbers (A000326) that are the product of 2 palindromes greater than 1.

12, 22, 35, 176, 330, 2380, 2625, 2882, 3432, 3876, 4845, 8855, 9801, 12650, 14652, 15251, 21901, 26070, 52360, 61105, 66045, 84847, 111657, 137562, 156332, 197472, 230300, 254410, 260625, 270725, 287547, 295482, 351142, 359905

Offset: 1

Author

Giovanni Resta, Jan 31 2006

Keywords

• nonn
• base

Examples

			66045 is the 210th pentagonal number and 66045=111*595.
		

Crossrefs

Cf. A000326, A115683, A115743, A115744.