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 A167814 Number of admissible basis in the postage stamp problem for n denominations and h = 7 stamps. 6
 1, 7, 105, 3407, 217997, 24929035, 4863045067 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,2 COMMENTS A basis 1 = b_1 < b_2 ... < b_n is admissible if all the values 1 <= x <= b_n is obtainable as a sum of at most h (not necessarily distinct) numbers in the basis. REFERENCES R. K. Guy, Unsolved Problems in Number Theory, C12. LINKS R. Alter and J. A. Barnett, A postage stamp problem, Amer. Math. Monthly, 87 (1980), 206-210. M. F. Challis, Two new techniques for computing extremal h-bases A_k, Comp J 36(2) (1993) 117-126 Erich Friedman, Postage stamp problem W. F. Lunnon, A postage stamp problem, Comput. J. 12 (1969) 377-380. S. Mossige, Algorithms for Computing the h-Range of the Postage Stamp Problem, Math. Comp. 36 (1981) 575-582 CROSSREFS Other enumerations with different parameters: A167809 (h = 2), A167810 (h = 3), A167811 (h = 4), A167812 (h = 5), A167813 (h = 6), A167814 (h = 7). For h = 2, cf. A008932. Sequence in context: A238464 A096131 A049210 * A209545 A002486 A203971 Adjacent sequences:  A167811 A167812 A167813 * A167815 A167816 A167817 KEYWORD hard,more,nonn AUTHOR Yogy Namara (yogy.namara(AT)gmail.com), Nov 12 2009 STATUS approved

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Last modified October 13 19:52 EDT 2019. Contains 327981 sequences. (Running on oeis4.)