A103155 - OEIS

%I #4 Mar 30 2012 18:35:42

%S 42278,44478,46678,47876,48878,49896

%N Each letter appears an even number of times in the English names for 1 through n taken together (names with "and").

%C The English names for numbers 1 through 42278 together contain 83036 a's, 158994 d's, 192398 e's, 41248 f's, 16648 g's, 122564 h's, 82264 i's, 2846 l's, 210108 n's, 83684 o's, 83574 r's, 74594 s's, 173440 t's, 91686 u's, 30508 v's, 27016 w's, 16658 x's and 56098 y's. Each of these counts is even so 42278 is in the sequence.

%K nonn,word

%O 1,1

%A _David W. Wilson_, Jan 24 2005