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A116347
n times n+9 gives the concatenation of two numbers m and m+8.
4
345, 647, 829, 878, 933, 33180, 42271, 57721, 66812, 316429537030539, 319485532390187, 328611858418903, 332707864512186, 339600869407914, 347417506407134, 355879196889561, 370588838784509, 383811170906508
OFFSET
1,1
EXAMPLE
66812 * 66821 = 44644//44652, where // denotes concatenation.
CROSSREFS
KEYWORD
nonn,base
AUTHOR
Giovanni Resta, Feb 06 2006
STATUS
approved