Search: id:A033577
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%I A033577
%S A033577 1,20,63,130,221,336,475,638,825,1036,1271,1530,1813,2120,
%T A033577 2451,2806,3185,3588,4015,4466,4941,5440,5963,6510,7081,
%U A033577 7676,8295,8938,9605,10296,11011,11750,12513,13300,14111
%N A033577 (3n+1)(4n+1).
%Y A033577 Sequence in context: A117431 A159504 A117432 this_sequence A074632 A158444 
               A145191
%Y A033577 Adjacent sequences: A033574 A033575 A033576 this_sequence A033578 A033579 
               A033580
%K A033577 nonn
%O A033577 0,2
%A A033577 N. J. A. Sloane (njas(AT)research.att.com).

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