Nonnegative integers whose Spanish and English names contain the same number of letters.
0, 1, 2, 7, 20, 21, 22, 27, 70, 73, 78, 134, 141, 142, 147, 150, 153, 158, 165, 166, 169
2 seqfan posts
Tue Jul 14 00:05:15 CEST 2009 [seqfan] Re: Seq. requirng knowledge of Spanish and English