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A013926 Values of a_n = (2n)!D_{2n}, where D_{2n} = \frac{1}{\pi} \int_{x=0}^{\infty} [ 1- \frac{x^{2n}} {\prod_{j=1}^n (x^2+j^2)} ] dx. 0
1, 28, 1434, 118960, 14611150, 2494744728, 565526968692, 164368956804288, 59603021615454678, 26379919529434077640, 13996517446366589638636, 8769645281519454489332448, 6406629794568469259015608204 (list; graph; refs; listen; history; internal format)
OFFSET

1,2

CROSSREFS

Sequence in context: A061321 A091993 A118705 * A110696 A007222 A042515

Adjacent sequences:  A013923 A013924 A013925 * A013927 A013928 A013929

KEYWORD

nonn

AUTHOR

Micha Hofri (hofri(AT)cs.rice.edu)

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Last modified February 16 19:23 EST 2012. Contains 205945 sequences.