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A006639 Restricted postage stamp problem.
(Formerly M2581)
0
3, 6, 15, 24, 33, 48, 63, 90 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

REFERENCES

N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence).

S. S. Wagstaff, Jr., Additive h-bases for n, pp. 302-327 of Number Theory Carbondale 1979, Lect. Notes Math. 751 (1982).

LINKS

Table of n, a(n) for n=1..8.

CROSSREFS

Sequence in context: A129602 A044888 A179805 * A242757 A166448 A192171

Adjacent sequences:  A006636 A006637 A006638 * A006640 A006641 A006642

KEYWORD

nonn

AUTHOR

N. J. A. Sloane.

STATUS

approved

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Last modified July 2 09:21 EDT 2020. Contains 335398 sequences. (Running on oeis4.)