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 A338380 Replace every term a(n) by the pair [a(n), a(n)] to form a new sequence S: S is the succession of the absolute differences of the starting sequence. 1
 1, 2, 3, 5, 7, 10, 13, 18, 23, 16, 9, 19, 29, 42, 55, 73, 91, 68, 45, 61, 77, 86, 95, 114, 133, 104, 75, 117, 159, 214, 269, 342, 415, 324, 233, 165, 97, 142, 187, 248, 309, 232, 155, 241, 327, 422, 517, 631, 745, 612, 479, 375, 271, 196, 121, 238, 355, 514, 673, 887, 1101, 832, 563, 905, 1247, 1662, 2077 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,2 COMMENTS This is the lexicographically earliest sequence of distinct positive terms with this property. LINKS Carole Dubois, Table of n, a(n) for n = 1..5001 EXAMPLE The successive absolute differences between two successive terms are 1, 1, 2, 2, 3, 3, 5, 5, 7, 7, 10, 10, 13, 13, 18, 18, 23, 23, 16, 16, 9, 9,... which is the sequence itself with every term duplicated. CROSSREFS Cf. A033485 (same sequence, but strictly monotonically increasing). Sequence in context: A213213 A319470 A115001 * A309408 A347647 A008766 Adjacent sequences:  A338377 A338378 A338379 * A338381 A338382 A338383 KEYWORD base,nonn AUTHOR Eric Angelini and Carole Dubois, Nov 05 2020 STATUS approved

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Last modified September 20 05:24 EDT 2021. Contains 347577 sequences. (Running on oeis4.)