OFFSET
1,2
COMMENTS
Same as A122544, except that both sums and absolute differences of previous terms are disqualified.
LINKS
Alois P. Heinz, Table of n, a(n) for n = 1..1000
EXAMPLE
a(3) cannot be 3 because 3 = 4-1 and 1 and 4 are both previous terms.
CROSSREFS
KEYWORD
nonn
AUTHOR
J. Lowell, May 09 2014
STATUS
approved