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%I #21 Sep 16 2020 02:21:14
%S 3,4,6,8,10,11,12,15,17,19,20,23,24,26,28,33,34,36,38,40,41,42,45,47,
%T 49,53,54,56,63,64,66,68,73,74,76,78,83,84,86,88,93,94,96,98,100,103,
%U 104,106,108,110,111,112,115,117,119,120,123,124,126,128,133,134,136,138,140,141,142,145,147,149
%N Integers with an even number of letters when written in Spanish.
%D Rodolfo Kurchan, Problem 15, Diversiones con Números y Figuras, (2000).
%e a(4) = 8 because 8 in spanish is written "ocho" and has 4 letters.
%t Select[Range@ 150, EvenQ@ StringLength@ StringDelete[IntegerName[#, {"Spanish"}], " "] &] (* _Michael De Vlieger_, Aug 21 2020 *)
%Y Cf. A001161.
%K nonn,word
%O 1,1
%A _Rodolfo Kurchan_, Aug 04 2020
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