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A027719 Numbers n such that n^2 + 1 is a palindrome. 3
0, 1, 2, 10, 25, 100, 1000, 1020, 1489, 2248, 10000, 10090, 100000, 100910, 102020, 167491, 1000000, 1000200, 1009090, 2744934, 10000000, 10000900, 10090910, 24917195, 100000000, 100909090, 103226660, 271867456 (list; graph; refs; listen; history; internal format)
OFFSET

1,3

LINKS

P. De Geest, Palindromic incremented squares of the form n^2+1

CROSSREFS

Cf. A002522, A027720.

Sequence in context: A119062 A058373 A167386 * A069894 A045605 A009307

Adjacent sequences:  A027716 A027717 A027718 * A027720 A027721 A027722

KEYWORD

nonn,base

AUTHOR

Patrick De Geest (pdg(AT)worldofnumbers.com)

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Last modified February 12 07:22 EST 2012. Contains 205378 sequences.