I was looking at how to find trinomial coefficients with code and I was puzzled with this equation.
$$\binom n k _2 = \binom{n}{-k}_2$$ I know that (nCk) represents n choose k but what does the 2 at the bottom right do compared to binomial?
2026-03-25 22:24:51.1774477491
Trinomial Summation Equation
21 Views Asked by Bumbble Comm https://math.techqa.club/user/bumbble-comm/detail AtRelated Questions in MULTINOMIAL-COEFFICIENTS
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