The Twelve Days of Christmas and A003990, A002620, etc.

[Franklin T. Adams-Watters]

A002620 is the sequence you are looking for.

Alonso Del Arte <alonso.delarte at gmail.com> wrote:
>I also looked up 1, 2, 4, 6, 9, 12, 16, 20, 25, 30, 36, 42, the
>largest number of a distinct gift you'd have on the n-th day. This
>yielded seven results, and extending the sequence to n = 15 (I have no
>idea what the extra gifts would be) still gives five results.
-- 
Franklin T. Adams-Watters
16 W. Michigan Ave.
Palatine, IL 60067
847-776-7645


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