[seqfan] A Sequential Puzzle

charliemath at optonline.net charliemath at optonline.net
Sat Mar 24 15:21:06 CET 2018


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 
Element and reads as follows:


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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