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A027723 Palindromes of form n^2+n+7. 1
7, 9, 313, 999, 31513, 75357, 78687, 90909, 98289, 3159513, 7642467, 9009009, 743080347, 900090009, 31413131413, 90000900009, 97474147479, 3105075705013, 9000009000009 (list; graph; refs; listen; history; internal format)
OFFSET

1,1

LINKS

P. De Geest, Palindromic Quasi_Over_Squares of the form n^2+(n+X)

CROSSREFS

Cf. A027722, A027692, A027756, A005471.

Sequence in context: A123746 A152551 A012252 * A046265 A082705 A122577

Adjacent sequences:  A027720 A027721 A027722 * A027724 A027725 A027726

KEYWORD

nonn,base

AUTHOR

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

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Last modified February 13 06:53 EST 2012. Contains 205451 sequences.