[seqfan] Two thingies with digits
Eric Angelini
Eric.Angelini at kntv.be
Mon Aug 15 10:49:36 CEST 2011
Hello SeqFans,
First, could someone please compute a hundred or so terms of S
where two consecutive terms of S share no digit with their sum?
This is http://oeis.org/A129562 dropping the "increasing" cons-
traint. I guess S starts:
S = 1,2,3,4,5,6,7,8,9,11,13,14,15,17,16,18,12,21...
Note that S is now a permutation of N. (Hope I didn't overlook S
in the OEIS.)
Second, could someone please also compute T, another permutation
of N, where the sum of the digits of a(n) "starts" a(n+1)?
I think that T looks like this:
T = 1,10,11,2,20,21,3,30,31,4,40,41,5,50,51,6,60,61,7,70,71,8,80,
81,9,90,91,100,12,32,52,72,92,110,22,42,...
Best,
have a nice "Ferragosto",
É.
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