

A167810


Number of admissible basis in the postage stamp problem for n denominations and h = 3 stamps.


6



1, 3, 13, 86, 760, 8518, 116278, 1911198, 37063964, 835779524, 21626042510, 635611172160, 21033034941826, 777710150809009
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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



CROSSREFS



KEYWORD

hard,more,nonn


AUTHOR

Yogy Namara (yogy.namara(AT)gmail.com), Nov 12 2009


EXTENSIONS

Terms a(1) to a(12) verified and new terms a(13) and a(14) added by Herbert Kociemba, Jul 14 2010


STATUS

approved



