A157379 Triangle read by rows: k X k determinants at the n-th row of A126988 without the first column of ones.

1, 2, 1, 3, -3, 1, 4, 6, 0, 1, 5, -10, -10, -5, 1, 6, 15, -20, 15, -6, 1, 7, -21, 0, 0, -21, -7, 1, 8, 28, 56, 0, 0, 0, 0, 1, 9, -36, 84, 126, 126, 0, 0, 0, 1, 10, 45, 0, -210, 252, -210, 0, 0, -10, 1, 11, -55, -165, 330, 0, 0, 330, 165, -55, -11, 1, 12, 66, -220, -495, 0, 0, 792

Offset

1,2

Links

Table of n, a(n) for n=1..73.

Example

Table begins:
   1;
   2,    1;
   3,   -3,    1;
   4,    6,    0,    1;
   5,  -10,  -10,   -5,    1;
   6,   15,  -20,   15,   -6,    1;
   7,  -21,    0,    0,  -21,   -7,    1;
   8,   28,   56,    0,    0,    0,    0,    1;
   9,  -36,   84,  126,  126,    0,    0,    0,    1;
  10,   45,    0, -210,  252, -210,    0,    0,  -10,    1;

Crossrefs

Cf. A157283.

Sequence in context: A177888 A073020 A090349 * A212139 A093430 A074659

Adjacent sequences: A157376 A157377 A157378 * A157380 A157381 A157382

Keyword

sign,tabl

Author

Mats Granvik & Gary W. Adamson, Feb 28 2009

Status

approved