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A131327 Triangle |4*|A049310(n,k)| - 3| read by rows, 0<=k<=n. 4
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 (list; table; graph; refs; listen; history; text; internal format)
OFFSET
0,2
LINKS
EXAMPLE
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;
...
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
CROSSREFS
Cf. A049310, A131328 (row sums), A131324, A131325, A131326.
Sequence in context: A131781 A082465 A226856 * A355899 A341050 A122506
KEYWORD
nonn,tabl
AUTHOR
Gary W. Adamson, Jun 28 2007
EXTENSIONS
Definition corrected. - R. J. Mathar, Aug 13 2012
STATUS
approved

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Last modified March 28 09:04 EDT 2024. Contains 371240 sequences. (Running on oeis4.)