Geodesic
Some formulas for the central trinomial and Motzkin numbers
Journal of integer sequences, Tome 6 (2003) no. 2
We prove two new formulas for the central trinomial coefficients and the Motzkin numbers.
Classification : 05A10, 05A15, 05A19
Keywords: central trinomial coefficients, Motzkin numbers, binomial identities 
@article{JIS_2003__6_2_a4,
     author = {Romik,  Dan},
     title = {Some formulas for the central trinomial and {Motzkin} numbers},
     journal = {Journal of integer sequences},
     year = {2003},
     volume = {6},
     number = {2},
     zbl = {1030.05002},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/JIS_2003__6_2_a4/}
}
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Romik,  Dan. Some formulas for the central trinomial and Motzkin numbers. Journal of integer sequences, Tome 6 (2003) no. 2. http://geodesic.mathdoc.fr/item/JIS_2003__6_2_a4/