A131327 Triangle |4*|A049310(n,k)| - 3| read by rows, 0<=k<=n.
1, 3, 1, 1, 3, 1, 3, 5, 3, 1, 1, 3, 9, 3, 1, 3, 9, 3, 13, 3, 1, 1, 3, 21, 3, 17, 3, 1, 3, 13, 3, 37, 3, 21, 3, 1, 1, 3, 37, 3, 57, 3, 25, 3, 1, 3, 17, 3, 77, 3, 81, 3, 29, 3, 1, 1, 3, 57, 3, 137, 3, 109, 3, 33, 3, 1, 3, 21, 3, 137, 3, 221, 3, 141, 3, 37, 3, 1, 1, 3, 81, 3, 277, 3, 333, 3, 177
Offset: 0
Examples
First few rows of the triangle are: 1; 3, 1; 1, 3, 1; 3, 5, 3, 1; 1, 3, 9, 3, 1; 3, 9, 3, 13, 3, 1; 1, 3, 21, 3, 17, 3, 1; ...
Programs
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Maple
A131327 := proc(n,k) abs(4*abs(A049310(n,k))-3) ; end proc: seq(seq(A131327(n,k),k=0..n),n=0..12) ; # R. J. Mathar, Aug 13 2012
Extensions
Definition corrected. - R. J. Mathar, Aug 13 2012