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A192111
Monotonic ordering of nonnegative differences 3^i-2^j, for i>=0, j>=0.
7
0, 1, 2, 5, 7, 8, 11, 17, 19, 23, 25, 26, 49, 65, 73, 77, 79, 80
OFFSET
1,3
COMMENTS
Complement of A173671 in the nonnegative integers.
LINKS
H. Gauchman and I. Rosenholtz (Proposers), R. Martin (Solver), Difference of prime powers, Problem 1404, Math. Mag., 65 (No. 4, 1992), 265; Solution, Math. Mag., 66 (No. 4, 1993), 269.
Math Overflow, 3^n - 2^m = +-41 is not possible. How to prove it?, Several contributors, Jun 29 2010.
CROSSREFS
Cf. A173671 (complement), A192110, A227048 (partial unions of rows).
Sequence in context: A216565 A285938 A325441 * A294635 A362591 A032402
KEYWORD
nonn
AUTHOR
Clark Kimberling, Jun 23 2011
EXTENSIONS
Deleted unwarranted programs and b-file. Only the terms in A173671 (that is, up to 100) have been proved to be correct. - N. J. A. Sloane, Oct 21 2019
STATUS
approved