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A116298
n times n+7 gives the concatenation of two numbers m and m+1.
5
6, 699, 776, 790, 867, 42337, 57657, 96883, 44121666, 55878328, 85298137, 36680703009575609347721358493, 63319296990424390652278641501, 69346342454876071597336150481, 81501115172242572470460459683
OFFSET
1,1
EXAMPLE
85298137 * 85298144 = 72757727//72757728, where // denotes
concatenation.
CROSSREFS
KEYWORD
nonn,base
AUTHOR
Giovanni Resta, Feb 06 2006
STATUS
approved