[seqfan] Correct seq defined by: a(a(n)) is a square

Eric Angelini Eric.Angelini at kntv.be
Sun Nov 22 16:56:59 CET 2009

Hello SeqFans (quater)
Here is the correct seq obeing to: "a(a(n)) is a square":
S = 1,3,4,9,6,16,8,25,36,11,49,13,64,15,81,100,18,121,20,144,22,169,24,196,225,27,256,29,289,31,324,33,361,...
Again, "always use the smallest available
integer not leading to a contradiction".
I guess that more of half the terms are
squares, and that this seq is "densier"
(in term of squares) than this one (see
former post): a(a(n))=a(n) squared




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