A118845 - OEIS

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A118845

Numbers that have non-Brauer chains among their shortest addition chains.

13, 19, 21, 25, 26, 29, 31, 37, 38, 39, 41, 42, 47, 49, 50, 52, 53, 55, 57, 58, 59, 61, 62, 63, 69, 71, 73, 74, 75, 76, 78, 79, 81, 82, 84, 87, 89, 91, 93, 94, 95, 97, 98, 100, 101, 103, 104, 105, 106, 107, 109, 110, 111, 113, 114, 115, 116, 117, 118, 121, 122, 123

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OFFSET

1,1

COMMENTS

Indices of nonzero terms in A079302. See A079301 for the definition of a Brauer addition chain.

LINKS

Table of n, a(n) for n=1..62.

Giovanni Resta, Tables of Shortest Addition Chains, computed by David W. Wilson.

CROSSREFS

Cf. A118846 (corresponding counts of minimal non-Brauer chains), A079301 (number of minimal Brauer chains for n), A079302 (number of minimal non-Brauer chains for n), A118844 (numbers without shortest non-Brauer chains).

Sequence in context: A350301 A171098 A349762 * A050717 A335034 A188540

Adjacent sequences: A118842 A118843 A118844 * A118846 A118847 A118848

KEYWORD

nonn

AUTHOR

Hugo Pfoertner, May 01 2006

STATUS

approved