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 A028931 Strings giving winning positions in Tchoukaillon (or Mancala) solitaire. 6
 0, 1, 20, 21, 310, 311, 4200, 4201, 4220, 4221, 53110, 53111, 642000, 642001, 642020, 642021, 642310, 642311, 7531200, 7531201, 7531220, 7531221, 86420110, 86420111, 86424000, 86424001, 86424020, 86424021, 86424310, 86424311 (list; graph; refs; listen; history; text; internal format)
 OFFSET 0,3 COMMENTS a(n) gives string listing winning position for n stones. Sum of numbers in a(n) is equal to n. Using the chromatic (tet-12) scale, (if C=0, 12, 24...) all integers correspond to pitches C, C#, G#, A, Bb, B, a recursive pattern that evenly bisects the octave and avoids the tritone (IC6). - Nik Bizzell-Browning, Apr 27 2019 LINKS Nik Bizzell-Browning, Tchoukaillon solitaire sequence, Chromatic pitch table and example. D. M. Broline and _Daniel E. Loeb_, The combinatorics of Mancala-Type games: Ayo, Tchoukaillon and 1/Pi, J. Undergrad. Math. Applic., vol. 16 (1995), pp. 21-36. FORMULA To get the next term, if rightmost 0 is in position i, replace it by i and subtract 1 from all earlier entries. EXAMPLE For example, a(10) = 53111; rightmost 0 is in position 6, so get 653111 -> a(11) = 642000. CROSSREFS Cf. A002491, A007952, A028920, A028931, A028932, A028933. Sequence in context: A041834 A219798 A063013 * A063012 A302205 A041836 Adjacent sequences:  A028928 A028929 A028930 * A028932 A028933 A028934 KEYWORD nonn,nice,easy,base AUTHOR EXTENSIONS More terms from Erich Friedman STATUS approved

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Last modified October 19 15:50 EDT 2019. Contains 328223 sequences. (Running on oeis4.)