A005342 a(n) = solution to the postage stamp problem with n denominations and 7 stamps.
7, 23, 69, 165, 345, 664, 1137, 1911
Offset: 1
References
- R. K. Guy, Unsolved Problems in Number Theory, C12.
- N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence).
Links
- R. Alter and J. A. Barnett, A postage stamp problem, Amer. Math. Monthly, 87 (1980), 206-210.
- Erich Friedman, Postage stamp problem
- R. L. Graham and N. J. A. Sloane, On Additive Bases and Harmonious Graphs
- R. L. Graham and N. J. A. Sloane, On Additive Bases and Harmonious Graphs, SIAM J. Algebraic and Discrete Methods, 1 (1980), 382-404.
- W. F. Lunnon, A postage stamp problem, Comput. J. 12 (1969) 377-380.
Crossrefs
Extensions
Entry improved by comments from John Seldon (johnseldon(AT)onetel.com), Sep 15 2004
a(8) from Challis and Robinson by Robert Price, Jul 19 2013
Comments