A318147 Coefficients of the Omega polynomials of order 3, triangle T(n,k) read by rows with 0<=k<=n.

1, 0, 1, 0, -9, 10, 0, 477, -756, 280, 0, -74601, 142362, -83160, 15400, 0, 25740261, -55429920, 40900860, -12612600, 1401400, 0, -16591655817, 38999319642, -33465991104, 13440707280, -2572970400, 190590400

Offset

0,5

Comments

The name 'Omega polynomial' is not a standard name.

Links

Table of n, a(n) for n=0..27.

Formula

Omega(m, n, z) = (m*n)!*[z^(n*m)] H(m, z)^x where H(m, z) = hypergeom([], [seq(i/m, i=1..m-1)], (z/m)^m). We consider here the case m = 3 (for other cases see the cross-references).

Example

[0] [1]
[1] [0,            1]
[2] [0,           -9,          10]
[3] [0,          477,        -756,          280]
[4] [0,       -74601,      142362,       -83160,       15400]
[5] [0,     25740261,   -55429920,     40900860,   -12612600,     1401400]
[6] [0, -16591655817, 38999319642, -33465991104, 13440707280, -2572970400,190590400]

Maple

# See A318146 for the missing functions.
FL([seq(CL(OmegaPolynomial(3, n)), n=0..8)]);

Mathematica

(* OmegaPolynomials are defined in A318146 *)
Table[CoefficientList[OmegaPolynomial[3, n], x], {n, 0, 6}] // Flatten

Prog

(Sage)
# See A318146 for the function OmegaPolynomial.
[list(OmegaPolynomial(3, n)) for n in (0..6)]

Crossrefs

All row sums are 1, alternating row sums (taken absolute) are A002115.

T(n,1) ~ A293951(n), T(n,n) = A025035(n).

A023531 (m=1), A318146 (m=2), this seq (m=3), A318148 (m=4).

Sequence in context: A058200 A067450 A220450 * A324663 A109409 A262551

Adjacent sequences: A318144 A318145 A318146 * A318148 A318149 A318150

Keyword

sign,tabl

Author

Peter Luschny, Aug 22 2018

Status

approved