A038523 A minimal sequence of weights with distinct weighings, with limit of two weights per pan.

2, 3, 9, 25, 67, 167, 427, 966

Offset

0,1

References

Discovered by Denis Borris and Ed Pegg Jr.

Links

Table of n, a(n) for n=0..7.

Ed Pegg, Jr., Commentary on Weekly Puzzles

Example

The first n weights give the number 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: A242271 A056198 A143742 * A358410 A361863 A096237

Adjacent sequences: A038520 A038521 A038522 * A038524 A038525 A038526

Keyword

more,nice,nonn

Author

Ed Pegg Jr

Status

approved