A307827 Palindromic decagonal (or 10-gonal) numbers.

0, 1, 232, 27972, 76867, 25555552, 7154664517, 158229922851, 2028787878202, 2040061600402, 2733623263372, 52667666676625, 675972505279576, 28519896169891582, 73542836563824537, 74529570707592547, 25552469511596425552, 27835145788754153872

Offset: 1

Author

Robert Price, Apr 30 2019

Keywords

• nonn
• base

Links

• Robert Price, Table of n, a(n) for n = 1..22
• P. De Geest, Palindromic nonagonals

Crossrefs

Cf. A001107, A082723.

Programs

Mathematica

Select[PolygonalNumber[10, Range[0, 10^5]], PalindromeQ]