[seqfan] Oops! guess the formula http://oeis.org/A200786
Ron Hardin
rhhardin at att.net
Tue Nov 22 20:05:59 CET 2011
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A formula for T(n.k) http://oeis.org/A200786 might be guessable, after the
formula for
column 2 given in http://oeis.org/A076264
a(n)=sum{k=0..floor(n/3), binomial(n-2k, k)(-1)^k*3^(n-3k)}
with the right generalization (I didn't stumble into it though).
Sorry about the bad links!
rhhardin at mindspring.com
rhhardin at att.net (either)
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