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Central diagonal of A163334 and A163336 divided by 4.
1

%I #2 Mar 31 2012 13:21:18

%S 0,1,2,11,10,9,18,19,20,101,100,99,90,91,92,83,82,81,162,163,164,173,

%T 172,171,180,181,182,911,910,909,900,901,902,893,892,891,810,811,812,

%U 821,820,819,828,829,830,749,748,747,738,739,740,731,730,729,1458

%N Central diagonal of A163334 and A163336 divided by 4.

%Y a(n) = A163343(n)/4.

%K nonn

%O 0,3

%A _Antti Karttunen_, Jul 29 2009