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A154557 Production array of A122848, read by row. 0
0, 1, 0, 1, 1, 0, -1, 2, 1, 0, 3, -3, 3, 1, 0, -15, 12, -6, 4, 1, 0, 105, -75, 30, -10, 5, 1, 0, -945, 630, -225, 60, -15, 6, 1, 0, 10395, -6615, 2205, -525, 105, -21, 7, 1, 0, -135135, 83160, -26460, 5880, -1050, 168, -28, 8, 1, 0, 2027025, -1216215, 374220, -79380 (list; graph; refs; listen; history; text; internal format)
OFFSET
0,8
LINKS
E. Deutsch, L. Ferrari and S. Rinaldi, Production Matrices and Riordan arrays, arXiv:math/0702638 [math.CO], 2007.
E. Deutsch, L. Ferrari and S. Rinaldi, Production Matrices, Advances in Applied Mathematics, 34 (2005) pp. 101-122.
EXAMPLE
Array starts
0, 1,
0, 1, 1,
0, -1, 2, 1,
0, 3, -3, 3, 1,
0, -15, 12, -6, 4, 1,
0, 105, -75, 30, -10, 5, 1,
0, -945, 630, -225, 60, -15, 6, 1,
0, 10395, -6615, 2205, -525, 105, -21, 7, 1,
0, -135135, 83160, -26460, 5880, -1050, 168, -28, 8, 1
0, 2027025, -1216215, 374220, -79380, 13230, -1890, 252, -36, 9, 1
Square of this array is
0, 1, 1,
0, 0, 3, 1,
0, 0, 0, 5, 1,
0, 0, 0, 0, 7, 1,
0, 0, 0, 0, 0, 9, 1,
0, 0, 0, 0, 0, 0, 11, 1,
0, 0, 0, 0, 0, 0, 0, 13, 1,
0, 0, 0, 0, 0, 0, 0, 0, 15, 1,
0, 0, 0, 0, 0, 0, 0, 0, 0, 17, 1
CROSSREFS
Sequence in context: A228821 A336932 A127258 * A049242 A108887 A337804
KEYWORD
sign,tabf
AUTHOR
Paul Barry, Jan 11 2009
STATUS
approved

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Last modified June 16 08:45 EDT 2024. Contains 373424 sequences. (Running on oeis4.)