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Search: id:A028555
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A028555 Numbers n such that n(n+4) is a palindrome. +0
1
0, 1, 7, 14, 21, 33, 44, 144, 235, 269, 524, 1123, 1452, 1582, 5412, 8338, 8459, 11063, 11223, 23255, 73491, 145544, 262808, 266737, 281349, 1659022, 2705669, 3504083, 5040882, 7395091, 8308388, 14554452 (list; graph; listen)
OFFSET

1,3
LINKS

P. De Geest, Palindromic Quasipronics of the form n(n+x)

CROSSREFS

Sequence in context: A033004 A164005 A100451 this_sequence A061823 A018890 A118502

Adjacent sequences: A028552 A028553 A028554 this_sequence A028556 A028557 A028558

KEYWORD

nonn

AUTHOR

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

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Last modified December 15 00:47 EST 2009. Contains 170825 sequences.

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