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A038523 A minimal sequence of weights with distinct weighings, with limit of two weights per pan. 1
2, 3, 9, 25, 67, 167, 427, 966 (list; graph; refs; listen; history; internal format)
OFFSET

0,1

REFERENCES

Discovered by Denis Borris and Ed Pegg Jr.

LINKS

Ed Pegg Jr., COMMENTARY ON WEEKLY PUZZLES

EXAMPLE

The first n weights give the # of distinct combinations given in A037255. The weights 1, 3, 9, 27, 81, 243, 729 also work for this problem, but are not distinct. Further numbers are calculable.

CROSSREFS

Cf. A037255.

Sequence in context: A111240 A056198 A143742 * A096237 A177928 A057231

Adjacent sequences:  A038520 A038521 A038522 * A038524 A038525 A038526

KEYWORD

more,nice,nonn

AUTHOR

Ed Pegg Jr (ed(AT)mathpuzzle.com)

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Last modified February 17 17:51 EST 2012. Contains 206061 sequences.