%I A033571
%S A033571 1,18,55,112,189,286,403,540,697,874,1071,1288,1525,1782,
%T A033571 2059,2356,2673,3010,3367,3744,4141,4558,4995,5452,5929,
%U A033571 6426,6943,7480,8037,8614,9211,9828,10465,11122,11799,12496
%N A033571 (2n+1)(5n+1).
%C A033571 a(n) = A153126(2*n) = A000566(2*n+1). [From Reinhard Zumkeller (reinhard.zumkeller(AT)gmail.com), 
               Dec 20 2008]
%C A033571 For n>0: a(n)=A008596(n)+A158186(n); a(n)=A010010(n)-A158186(n). [From 
               Reinhard Zumkeller (reinhard.zumkeller(AT)gmail.com), Mar 13 2009]
%F A033571 a(n)=20*n+a(n-1)-23 (with a(1)=1) [From Vincenzo Librandi (vincenzo.librandi(AT)tin.it), 
               Nov 16 2009]
%e A033571 For n=2, a(2)=20*2+1-23=18; n=3, a(3)=20*3+18-23=55; n=4, a(4)=20*4+55-23=112 
               [From Vincenzo Librandi (vincenzo.librandi(AT)tin.it), Nov 16 2009]
%Y A033571 A153127. [From Reinhard Zumkeller (reinhard.zumkeller(AT)gmail.com), 
               Dec 20 2008]
%Y A033571 Sequence in context: A069973 A041630 A088593 this_sequence A041632 A086540 
               A041634
%Y A033571 Adjacent sequences: A033568 A033569 A033570 this_sequence A033572 A033573 
               A033574
%K A033571 nonn
%O A033571 0,2
%A A033571 N. J. A. Sloane (njas(AT)research.att.com).