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A115533
Numbers k such that the concatenation of 3*k with k gives a square.
0
24489796, 55102041, 97959184, 15976331361, 28402366864, 44378698225, 63905325444, 86982248521, 24489795918367346938775510204081632653061224489796
OFFSET
1,1
EXAMPLE
73469388_24489796 = 85714286^2.
CROSSREFS
KEYWORD
nonn,base
AUTHOR
Giovanni Resta, Jan 25 2006
STATUS
approved