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 A145579 Eigentriangle, row sums = A001590 2
 1, 1, 1, 0, 1, 2, 1, 0, 2, 3, 1, 1, 0, 3, 6, 0, 1, 2, 0, 6, 11, 1, 0, 2, 3, 0, 11, 20, 1, 1, 0, 3, 6, 0, 20, 37, 0, 1, 2, 0, 6, 11, 0, 37, 68, 1, 0, 2, 3, 0, 11, 20, 0, 68, 125 (list; table; graph; refs; listen; history; text; internal format)
 OFFSET 3,6 COMMENTS Row sums = A001590 starting (1, 2, 3, 6, 11, 20, 37,...). Sum of n-th row terms = rightmost term of next row. LINKS FORMULA Let M = an infinite lower triangular matrix with (1, 1, 0, 1, 1, 0,...) in every column and X = a diagonalized matrix of A001590: (1, 1, 2, 3, 6, 11, 20, 37,...), (i.e. A001590 starting with offset 3 as a diagonal prefaced with a 1; and the rest zeros). Triangle A145579 = M * X. EXAMPLE First few rows of the triangle = 1; 1, 1; 0, 1, 2; 1, 0, 2, 3; 1, 1, 0, 3, 6; 0, 1, 2, 0, 6, 11; 1, 0, 2, 3, 0, 11, 20; 1, 1, 0, 3, 6, 0, 20, 37; 0, 1, 2, 0, 6, 11, 0, 37, 68; 1, 0, 2, 3, 0, 11, 20, 0, 68, 125; ... Row 7 = (1, 1, 0, 3, 6) = termwise products of (1, 1, 0, 1, 1) and (1, 1, 2, 3, 6). CROSSREFS Sequence in context: A123949 A236358 A144082 * A167655 A262781 A157218 Adjacent sequences:  A145576 A145577 A145578 * A145580 A145581 A145582 KEYWORD nonn,tabl AUTHOR Gary W. Adamson, Oct 13 2008 EXTENSIONS Alignment of example rows and unintentional concatenation of values fixed by Charles J. Daniels (chajadan(AT)gmail.com), Dec 05 2009 STATUS approved

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Last modified October 13 20:38 EDT 2019. Contains 327981 sequences. (Running on oeis4.)