# Greetings from The On-Line Encyclopedia of Integer Sequences! http://oeis.org/ Search: id:a103155 Showing 1-1 of 1 %I A103155 #4 Mar 30 2012 18:35:42 %S A103155 42278,44478,46678,47876,48878,49896 %N A103155 Each letter appears an even number of times in the English names for 1 through n taken together (names with "and"). %C A103155 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 A103155 nonn,word %O A103155 1,1 %A A103155 _David W. Wilson_, Jan 24 2005 # Content is available under The OEIS End-User License Agreement: http://oeis.org/LICENSE