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A038523 A minimal sequence of weights with distinct weighings, with limit of two weights per pan. +0
2
2, 3, 9, 25, 67, 167, 427, 966 (list; graph; listen)
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 this_sequence A096237 A057231 A045596

Adjacent sequences: A038520 A038521 A038522 this_sequence A038524 A038525 A038526

KEYWORD

more,nice,nonn

AUTHOR

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

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Last modified November 21 14:49 EST 2008. Contains 150807 sequences.


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