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A134317
Triangle, A128174 * A134309 as infinite lower triangular matrices.
2
1, 0, 1, 1, 0, 2, 0, 1, 0, 4, 1, 0, 2, 0, 8, 0, 1, 0, 4, 0, 16, 1, 0, 2, 0, 8, 0, 32, 0, 1, 0, 4, 0, 16, 0, 64, 1, 0, 2, 0, 8, 0, 32, 0, 128, 0, 1, 0, 4, 0, 16, 0, 64, 0, 256
OFFSET
1,6
COMMENTS
Is this the same as A123641? - R. J. Mathar, Mar 28 2012
FORMULA
T(n,k) = 0 if n+k odd, else T(n,1) =1, T(n,k)=2^(k-2) if k>=2. - R. J. Mathar, Sep 01 2024
EXAMPLE
First few rows of the triangle are:
1;
0, 1;
1, 0, 2;
0, 1, 0, 4;
1, 0, 2, 0, 8;
0, 1, 0, 4, 0, 16;
1, 0, 2, 0, 8, 0, 32;
0, 1, 0, 4, 0, 16, 0, 64;
...
CROSSREFS
Cf. A128174, A134309, A001045 (row sums).
Sequence in context: A145973 A155761 A067631 * A123641 A217377 A361652
KEYWORD
nonn,tabl,easy
AUTHOR
Gary W. Adamson, Oct 19 2007
STATUS
approved