[seqfan] First differences are the sums of the two digits touching the commas
Eric.Angelini at kntv.be
Tue Oct 4 14:53:41 CEST 2011
S = 0,5,11,13,17,26,35,44,53,62,71,79,97,105,111,113,117,...
Consider the first comma; its closest digits are 0 and 5;
add 0 to 5; the sum (5) is the first difference between 0 and 5.
Consider the second comma; its closest digits are 5 and 1;
add 5 to 1; the sum (6) is the first difference between 5 and 11.
Does S stop at some point? If yes, could another -longer- S arise
from a different start?
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