A134317 - OEIS

A134317

Triangle, A128174 * A134309 as infinite lower triangular matrices.

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

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OFFSET

1,6

COMMENTS

Is this the same as A123641? - R. J. Mathar, Mar 28 2012

LINKS

Table of n, a(n) for n=1..55.

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:

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

Adjacent sequences: A134314 A134315 A134316 * A134318 A134319 A134320

KEYWORD

nonn,tabl,easy

AUTHOR

Gary W. Adamson, Oct 19 2007

STATUS

approved