0,6

It is conjectured that all elements of this triangle are integers. Row sums are A127712.

Triangle begins

1,

0, 1,

0, -1, 2,

0, 1, -2, 3,

0, 0, 0, -3, 5,

0, -1, 2, 0, -5, 8,

0, 0, 0, 0, 0, -8, 13,

0, 1, -2, 3, 0, 0, -13, 21,

0, 0, 0, 0, 0, 0, 0, -21, 34,

0, 0, 0, -3, 5, 0, 0, 0, -34, 55,

0, 0, 0, 0, 0, 0, 0, 0, 0, -55, 89,

0, -1, 2, 0, -5, 8, 0, 0, 0, 0, -89, 144,

0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, -144, 233

Triangle is the inverse of the triangle

1,

0, 1,

0, 1/2, 1/2,

0, 0, 1/3, 1/3,

0, 0, 1/5, 1/5, 1/5,

0, 0, 0, 1/8, 1/8, 1/8,

0, 0, 0, 1/13, 1/13, 1/13, 1/13,

0, 0, 0, 0, 1/21, 1/21, 1/21, 1/21,

0, 0, 0, 0, 1/34, 1/34, 1/34, 1/34, 1/34

Sequence in context: A162986 A128584 A080099 this_sequence A069584 A014587 A025658

Adjacent sequences: A127708 A127709 A127710 this_sequence A127712 A127713 A127714

sign,tabl

Paul Barry (pbarry(AT)wit.ie), Jan 24 2007