# [seqfan] Re: A Sequential Puzzle

rene.gy at numericable.com rene.gy at numericable.com
Sat Mar 24 21:24:53 CET 2018

This could be   (5!/n)(2^n -1)     from n=-3 to n=+6 , but then it is no
integer sequence, and q =120*Log[2].

-----Message d'origine-----
From: charliemath at optonline.net
Sent: Saturday, March 24, 2018 3:21 PM
To: Sequence Fanatics Discussion list
Subject: [seqfan] A Sequential Puzzle

Some SeqFans may already be acquainted with a weekly column  entitled
Varsity Math, published Saturdays in the Wall St. Journal's Review
section.

The second ot two problems in today's edition is called The Missing

The open-ended sequence ...35,45, 60, q, 120,180,280, 450, 744, 1260,...
has an undisclosed element, q.  Find a simple continuous function to
generate the sequence and compute the surprise answer for q.

I did a search for any sequence that contains 35 45 60 120 180 280 450
744 1260.
Seqence A103252 contains each value except 744.  No sequence contains
all 9 values.

I'm guessing this sequence, once found, will make its way into OEIS.

Enjoy!

Charlie Marion

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