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Search: id:A028556
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A028556 Palindromes of form n(n+4). +0
1
0, 5, 77, 252, 525, 1221, 2112, 21312, 56165, 73437, 276672, 1265621, 2114112, 2509052, 29311392, 69555596, 71588517, 122434221, 126000621, 540888045, 5401221045, 21183638112, 69069096096, 71149694117, 79158385197 (list; graph; listen)
OFFSET

1,2
LINKS

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

CROSSREFS

Sequence in context: A076215 A059856 A001513 this_sequence A039753 A009485 A015056

Adjacent sequences: A028553 A028554 A028555 this_sequence A028557 A028558 A028559

KEYWORD

nonn

AUTHOR

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

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Last modified December 20 16:54 EST 2009. Contains 171081 sequences.

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