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 A089839 Array A(x,y): (read as A(0,0), A(1,0), A(0,1), A(2,0), A(1,1), A(0,2), A(3,0), A(2,1), A(1,2), A(0,3),...) Position of the composition A089840[y] o A089840[x] in the table A089840. 20
 0, 1, 1, 2, 0, 2, 3, 14, 19, 3, 4, 15, 0, 21, 4, 5, 16, 6, 4, 17, 5, 6, 13, 5, 0, 3, 18, 6, 7, 12, 4, 2, 5, 6, 20, 7, 8, 21, 3, 6, 6, 4, 5, 15, 8, 9, 18, 1654606, 5, 2, 3, 2, 1654137, 13, 9, 10, 17, 1655095, 1654694, 0, 0, 0, 1654694, 1654255, 16, 10 (list; table; graph; refs; listen; history; text; internal format)
 OFFSET 0,4 COMMENTS This is a "multiplication table" of an infinite enumerable group. Each row and column is a permutation of A001477. LINKS A. Karttunen, C-program for computing the elements of this table EXAMPLE A(2,1)=14 because A089840[2] = A072796, A089840[1] = A069770 and the composition A069770 o A072796 (here the right hand side permutation acts first) yields A073269 = A089840[14]. Similarly A(2,2)=0, as A089840[2] = A072796, which being an involution, yields A001477 (= A089840[0]) when "squared". CROSSREFS Column 1: A089837, row 1: A089838, the main diagonal: A089841. Sequence in context: A072514 A071547 A220222 * A206823 A151668 A086151 Adjacent sequences:  A089836 A089837 A089838 * A089840 A089841 A089842 KEYWORD nonn,tabl AUTHOR Antti Karttunen, Dec 05 2003 STATUS approved

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Last modified December 11 18:19 EST 2019. Contains 329925 sequences. (Running on oeis4.)