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A118845 Numbers that have non-Brauer chains among their shortest addition chains. 2
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 (list; graph; refs; listen; history; text; internal format)
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: A236999 A216639 A171098 * A050717 A335034 A188540

Adjacent sequences:  A118842 A118843 A118844 * A118846 A118847 A118848

KEYWORD

nonn

AUTHOR

Hugo Pfoertner, May 01 2006

STATUS

approved

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Last modified June 16 14:16 EDT 2021. Contains 345057 sequences. (Running on oeis4.)