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A101022 Table of numerators of coefficients of certain rational polynomials. 2
1, 1, 1, 1, 1, 2, 1, 1, 2, 1, 1, 2, 4, 2, 8, 1, 5, 4, 1, 8, 4, 1, 1, 2, 2, 8, 8, 16, 1, 7, 14, 1, 8, 4, 16, 2, 1, 4, 56, 4, 16, 32, 64, 16, 128, 1, 3, 8, 6, 16, 8, 64, 8, 128, 64, 1, 5, 2, 12, 16, 16, 160, 16, 128, 128, 256, 1, 11, 22, 33, 176, 8, 32, 4, 128, 64, 256, 64, 1, 2, 44, 22, 88, 32 (list; table; graph; refs; listen; history; text; internal format)
OFFSET

1,6

COMMENTS

These rational polynomials R(n;x) appear in the evaluation of an integral in thermal field theories in the Bose case. See the Haber and Weldon reference eq. (D1), l. 2, p. 1857 and the W. Lang link.

REFERENCES

H. E. Haber and H. A. Weldon, On the relativistic Bose-Einstein integrals, J. Math. Phys. 23(10) (1982) 1852-1858.

LINKS

Table of n, a(n) for n=1..84.

W. Lang: Rational polynomials R(n,x)

FORMULA

a(n, m)= numerator(R(n, x)[x^m]), m=0, ..., n-1, n>=1, with the rational polynomials R(n, x) of degree n-1 defined by R(n, x):=hypergeom([1, 1, 1-n], [3/2, 2], -x/2)) = sum(R(n, m)*x^m, m=0..n-1), n>=1.

The rational polynomials are R(n, x) = 1 + sum(binomial(n-1, m)/((m+1)*(2*m+1)*binomial(2*m, m))*(2*x)^m, m=1..n-1), n>=1.

a(n, m)=numerator(R(n, m)) with R(n, m) = binomial(n-1, m)/((m+1)*(2*m+1)*binomial(2*m, m))*2^m, m=1..n-1, n=1, 2, ... and R(n, 0)=1, n>=1, else 0.

EXAMPLE

The rows of the rational table are: [1/1]; [1/1, 1/6]; [1/1, 1/3, 2/45]; [1/1, 1/2, 2/15, 1/70]; ...

CROSSREFS

The table of denominators is given in A101023.

Sequence in context: A136610 A326371 A226304 * A241153 A213852 A051064

Adjacent sequences:  A101019 A101020 A101021 * A101023 A101024 A101025

KEYWORD

nonn,frac,tabl,easy

AUTHOR

Wolfdieter Lang, Nov 30 2004

STATUS

approved

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Last modified August 13 19:30 EDT 2020. Contains 336451 sequences. (Running on oeis4.)