%I A001545
%S A001545 4,54,154,304,504,754,1054,1404,1804,2254,2754,3304,3904,
%T A001545 4554,5254,6004,6804,7654,8554,9504,10504,11554,12654,13804,
%U A001545 15004,16254,17554,18904,20304,21754,23254,24804,26404
%N A001545 (5n+1)(5n+4).
%Y A001545 Equals 50 * A000217(n) + 4.
%Y A001545 Sequence in context: A158259 A095210 A156469 this_sequence A073863 A089205 
               A055774
%Y A001545 Adjacent sequences: A001542 A001543 A001544 this_sequence A001546 A001547 
               A001548
%K A001545 nonn
%O A001545 0,1
%A A001545 N. J. A. Sloane (njas(AT)research.att.com).