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 A341231 Irregular triangle read by rows giving trajectory from n to reach 1 under the map A245471. 3
 1, 2, 1, 3, 4, 2, 1, 4, 2, 1, 5, 14, 7, 8, 4, 2, 1, 6, 3, 4, 2, 1, 7, 8, 4, 2, 1, 8, 4, 2, 1, 9, 26, 13, 22, 11, 28, 14, 7, 8, 4, 2, 1, 10, 5, 14, 7, 8, 4, 2, 1, 11, 28, 14, 7, 8, 4, 2, 1, 12, 6, 3, 4, 2, 1, 13, 22, 11, 28, 14, 7, 8, 4, 2, 1, 14, 7, 8, 4, 2, 1 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,2 COMMENTS A340873 gives row lengths. A341235 gives greatest terms. LINKS Rémy Sigrist, Table of n, a(n) for n = 1..9098 (rows 1..500) FORMULA T(n, 1) = n. T(n, A340873(n)) = 1. EXAMPLE Table begins:     1;     2, 1;     3, 4, 2, 1;     4, 2, 1;     5, 14, 7, 8, 4, 2, 1;     6, 3, 4, 2, 1;     7, 8, 4, 2, 1;     8, 4, 2, 1;     9, 26, 13, 22, 11, 28, 14, 7, 8, 4, 2, 1;     10, 5, 14, 7, 8, 4, 2, 1;     11, 28, 14, 7, 8, 4, 2, 1;     12, 6, 3, 4, 2, 1;     13, 22, 11, 28, 14, 7, 8, 4, 2, 1;     14, 7, 8, 4, 2, 1;     15, 16, 8, 4, 2, 1;     16, 8, 4, 2, 1;     ... PROG (PARI) row(n) = { my (r=[n]); while (n>1, r=concat(r, n=if (n%2, bitxor(n, 2*n+1), n/2))); r } CROSSREFS Cf. A070165, A245471, A340873, A341235. Sequence in context: A286539 A004741 A133923 * A334081 A125158 A273823 Adjacent sequences:  A341228 A341229 A341230 * A341232 A341233 A341234 KEYWORD nonn,base,look,tabf AUTHOR Rémy Sigrist, Feb 07 2021 STATUS approved

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Last modified April 12 18:58 EDT 2021. Contains 342932 sequences. (Running on oeis4.)