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E-Mail Christmas Card corrections #2
Yeah, yeah, yeah, I know, I know (heh heh). All I meant by
"binomial" was that the expression giving t(i), the total number
received of the i-th present (that is, the present that makes its
first appearance on the i-th day of Christmas), has just two
terms: t(i) = 13i - i^2. I didn't mean it was the i-th coefficient of
a binomial expansion or anything like that.