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This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.

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A181116 Triangle T(n,k) read by rows. T(n,k) = A046643(A126988).

Original entry on oeis.org

1, 1, 1, 1, 0, 1, 3, 1, 0, 1, 1, 0, 0, 0, 1, 1, 1, 1, 0, 0, 1, 1, 0, 0, 0, 0, 0, 1, 5, 3, 0, 1, 0, 0, 0, 1, 3, 0, 1, 0, 0, 0, 0, 0, 1, 1, 1, 0, 0, 1, 0, 0, 0, 0, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 3, 1, 3, 1, 0, 1, 0, 0, 0, 0, 0, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 1
Offset: 1

Views

Author

Mats Granvik, Oct 04 2010

Keywords

Comments

Numerator in fraction A181116/A181117. A051731=(A181116/A181117)*(A181116/A181117).

Examples

			Triangle starts:
1,
1,1,
1,0,1,
3,1,0,1,
1,0,0,0,1,
1,1,1,0,0,1,
1,0,0,0,0,0,1,
5,3,0,1,0,0,0,1,
3,0,1,0,0,0,0,0,1,
1,1,0,0,1,0,0,0,0,1,
1,0,0,0,0,0,0,0,0,0,1,
3,1,3,1,0,1,0,0,0,0,0,1,
1,0,0,0,0,0,0,0,0,0,0,0,1,
1,1,0,0,0,0,1,0,0,0,0,0,0,1,
1,0,1,0,1,0,0,0,0,0,0,0,0,0,1,

Crossrefs

Cf. A181117, A046643, A051731.
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