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A note on Pascal-T triangles, multinomial coefficients, and Pascal pyramids. (English) Zbl 0598.05011

The author finds the number of Pascal T-triangles and that of Pascal’s pyramids. These are shown to depend on multinomial coefficients. The proofs are simple and elegant.
The examples on page 141, and the Pascal square recorded on page 143 could not be improved upon. A nice piece of work.
Reviewer: H.Gupta

MSC:

05A99 Enumerative combinatorics
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