Search: id:A015226
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%I A015226
%S A015226 22,50,252,372,946,1222,2360,2856,4750,5530,8372,9500,13482,15022,
%T A015226 20336,22352,29190,31746,40300,43460,53922,57750,70312,74872,89726,
%U A015226 95082,112420,118636,138650,145790,168672,176800,202742,211922,241116
%N A015226 Even hexagonal pyramidal numbers.
%F A015226 Even numbers of form n(n+1)(4n-1)/6.
%t A015226 Select[ Table[ n(n+1)(4n-1)/6, {n, 100} ], EvenQ ]
%Y A015226 Sequence in context: A039345 A043168 A043948 this_sequence A092221 A111576 
               A101571
%Y A015226 Adjacent sequences: A015223 A015224 A015225 this_sequence A015227 A015228 
               A015229
%K A015226 nonn,easy
%O A015226 0,1
%A A015226 Mohammad K. Azarian (ma3(AT)evansville.edu)
%E A015226 More terms from Erich Friedman (erich.friedman(AT)stetson.edu).

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