On 2019-06-02 07:49, Neil Sloane wrote:

Go to the OEIS and enter the last two rows: 5,8,9,8,5,6,10,12,12,10,6 The response is instantaneous

I.e., the tilted times table! T(n,k)=k(n-k). Surprising(?) occurrence: superHyperfactorial (https://oeis.org/A125760). Product[Hyperfactorial@k, {k, n - 1}] == Product[k^T[n,k], {k, n}] —rwg

On Sun, Jun 2, 2019 at 10:46 AM Fred Lunnon <fred.lunnon@gmail.com> wrote:

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Approx. 5 secs. Do I get a chocolate frog? WFL

On 6/2/19, Mike Speciner <ms@alum.mit.edu> wrote:

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Too long.

On 02-Jun-19 07:54, Bill Gosper wrote:

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1 2 2 3 4 3 4 6 6 4 5 8 9 8 5 6 10 12 12 10 6 . . . —rwg