%I #10 Mar 31 2012 13:22:29

%S 0,2,4,8,15,26,45,75,121,193,302,463,703,1052,1555,2277,3301,4740,

%T 6754,9548,13398,18678,25873,35620,48771,66418,89988,121345,162878,

%U 217666,289685,383994,507059,667131,874656,1142860,1488484,1932575,2501599,3228787

%N a(0)=0: a(n)=A002865(2*n)+A002865(2*n+1), n>=1.

%C a(n) is also the length of the n-th "large mirror" of the "mirror" version of the shell model of partitions A135010.

%H Nathaniel Johnston, <a href="/A182844/b182844.txt">Table of n, a(n) for n = 0..1000</a>

%e a(0)=0 by definition. a(1)=1+1=2: a(2)=2+2=4. a(3)=4+4=8. a(4)=7+8=15. a(5)=12+14=26. a(6)=21+24=45.

%Y Cf. A002865, A135010. For another version see A182845.

%K nonn,easy

%O 0,2

%A _Omar E. Pol_, Jan 24 2011

%E Extended by _Nathaniel Johnston_, May 06 2011