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Numbers n with the property that their digital sum is equal to the number of letters in n when spelled out in Spanish.
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%I #4 Aug 16 2015 21:56:46

%S 5,15,18,19,28,29,66,67,70,85,92,93,198,199,598,599,698,699,708,709,

%T 788,789,878,879,896,897,906,907,968,969,986,987,990,1006,1007,1068,

%U 1069,1086,1087,1090,1898,1899,1908,1909,1988,1989,2008,2009,2088,2089,3008

%N Numbers n with the property that their digital sum is equal to the number of letters in n when spelled out in Spanish.

%C Example 15 is in the list because 1+5 = 6 = number of letters in "quince".

%K base,nonn,word

%O 1,1

%A _Claudio Meller_, Mar 23 2010