[seqfan] Sum and absolute difference share no digit

[Éric Angelini]

Hello SeqFans,
I don't know if this sequence exists 
but I'm looking for the lexicographically 
first _derangement_ of N such that 
the sum and the absolute difference 
of two successive terms don't share
any digit.

S = 1,2,3,5,4,6,8,10,7,9,12,11,15,14,13,...

In computing S, one has to backtrack 
quite often as an  integer K ending 
with 0 or 5 cannot be followed by an 
integer > K.

Best, 
É.


à+
É.
Catapulté de mon aPhone