0,8

E. Deutsch, L. Ferrari and S. Rinaldi, Production Matrices, Advances in Applied Mathematics, 34 (2005) pp. 101-122

E. Deutsch, L. Ferrari and S. Rinaldi, Production Matrices and Riordan arrays, arXiv:0702638v1, 2007

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

Cf. A113278, A132382, A001147.

Sequence in context: A121548 A113020 A127258 this_sequence A049242 A108887 A095884

Adjacent sequences: A154554 A154555 A154556 this_sequence A154558 A154559 A154560

sign,tabf

Paul Barry (pbarry(AT)wit.ie), Jan 11 2009