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A116264
n times n+9 gives the concatenation of two numbers m and m-4.
4
76, 4327, 5665, 9364, 41505566065992219341, 44035313091289689594, 46429818586950933763, 48959565612248404016, 51040434387751595976, 53570181413049066229, 55964686908710310398, 58494433934007780651
OFFSET
1,1
EXAMPLE
9364 * 9373 = 8776//8772, where // denotes concatenation.
CROSSREFS
KEYWORD
nonn,base
AUTHOR
Giovanni Resta, Feb 06 2006
STATUS
approved