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 A236603 Lowest canonical Gray cycles of length 2n. 2
 0, 1, 0, 1, 3, 2, 0, 2, 3, 1, 5, 4, 0, 1, 3, 2, 6, 7, 5, 4, 0, 2, 3, 7, 6, 4, 5, 1, 9, 8, 0, 1, 3, 7, 5, 4, 6, 2, 10, 11, 9, 8, 0, 1, 3, 2, 6, 7, 5, 4, 12, 13, 9, 11, 10, 8, 0, 1, 3, 2, 6, 4, 5, 7, 15, 11, 9, 13, 12, 14, 10, 8, 0, 2, 3, 7, 5, 4, 6, 14, 10, 8, 12, 13, 15, 11, 9, 1, 17, 16 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,5 COMMENTS See A236602 for definitions regarding canonical Gray sequences (CGC). The CGC's of a given length can be sorted 'lexically'; for example, the CGC {0 1 5 4 6 7 3 2} precedes {0 1 5 7 3 2 6 4}. This sequence is then the flattened triangular table of the terms of the lowest CGC for each even length L, where L = 2*. Note: zero unequivocally marks the start of each CGC. LINKS Stanislav Sykora, Table of n, a(n) for n = 1..306 Stanislav Sykora, Triangle for A236603 Sykora S., On Canonical Gray Cycles, Stan's Library, Vol.V, January 2014, DOI: 10.3247/SL5Math14.001. EXAMPLE L    CGC 2    0, 1 4    0, 1, 3, 2 6    0, 2, 3, 1, 5, 4 8    0, 1, 3, 2, 6, 7, 5, 4 10   0, 2, 3, 7, 6, 4, 5, 1, 9, 8 CROSSREFS Cf. A236602(CGC counts) Sequence in context: A281451 A246863 A227864 * A129576 A122861 A277097 Adjacent sequences:  A236600 A236601 A236602 * A236604 A236605 A236606 KEYWORD nonn,tabf,hard AUTHOR Stanislav Sykora, Feb 01 2014 STATUS approved

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Last modified December 17 12:05 EST 2018. Contains 318201 sequences. (Running on oeis4.)