[seqfan] a(n)+ [the a(n)th digit of T] is odd (same idea)

Eric Angelini Eric.Angelini at kntv.be
Sat Feb 6 18:45:21 CET 2016


Hello SeqFans,
same idea as my prior post -- but the sum has to be odd;

"a(n)+ [the a(n)th digit of T] is odd"
(To extend T always use the smallest
available integer not yet in T and not
leading to a contradiction.)

T=2,1,4,3,6,5,8,7,11,20,10,17,21,23,24,
25,27,29,26,16,18,19,36,41,40,39,44,45,
47,48,49,50,51,53,54,58,60,65,67,68,
69,70,71,73,...

The equivalent seq U where the sum
has to be even is.. even less sexy:

U=1,2,3,4,5,6,7,8,9,11,13,15,17,19,20,
22,24,26,28,31,33,35,37,39,40,42,44,
46,48,51,53,55,57,...

Best,
É.




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