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 A329849 For a(n) even (respectively odd), there are a(n) even terms (respectively odd terms) between the only two occurrences of a(n). This is the lexicographially earliest sequence of nonnegative integers with this property. 1
 0, 0, 1, 2, 3, 1, 4, 5, 6, 2, 7, 3, 8, 9, 10, 4, 11, 12, 13, 5, 14, 6, 15, 16, 17, 7, 18, 19, 20, 8, 21, 22, 23, 9, 24, 10, 25, 26, 27, 11, 28, 29, 30, 12, 31, 13, 32, 33, 34, 14, 35, 36, 37, 15, 38, 39, 40, 16, 41, 17, 42, 43, 44, 18, 45, 46, 47, 19, 48, 20, 49, 50, 51, 21, 52, 53, 54, 22, 55 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,4 LINKS Jean-Marc Falcoz, Table of n, a(n) for n = 1..10000 EXAMPLE Between the two 0's there are 0 terms. Between the two 1's there is 1 odd term (which is 3 - we don't count 2 as 2 is even). Between the two 2's there are 2 even terms (which are 4 and 6 - we don't count 3, 1 and 5 as they are odd). Between the two 3's there are 3 odd terms (which are 1, 5 and 7 - we don't count 4, 6 and 2 as they are even). Between the two 4's there are 4 even terms (which are 6, 2, 8 and 10 - we don't count 5, 7, 3 and 9 as they are odd). Etc. CROSSREFS Cf. A014552. Sequence in context: A055449 A055442 A055439 * A122005 A306353 A117385 Adjacent sequences:  A329846 A329847 A329848 * A329850 A329851 A329852 KEYWORD base,nonn AUTHOR Eric Angelini and Jean-Marc Falcoz, Nov 22 2019 STATUS approved

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Last modified June 16 13:44 EDT 2021. Contains 345057 sequences. (Running on oeis4.)