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A028556 Palindromes of form n(n+4). 0
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; refs; listen; history; internal format)
OFFSET

1,2

LINKS

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

CROSSREFS

Sequence in context: A202607 A059856 A001513 * A039753 A186662 A186660

Adjacent sequences:  A028553 A028554 A028555 * A028557 A028558 A028559

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.