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 A028026 Expansion of 1/((1-3x)(1-4x)(1-5x)(1-7x)). 0
 1, 19, 230, 2270, 19971, 163569, 1278040, 9670540, 71557541, 521211119, 3754036650, 26822296410, 190541788711, 1347984742669, 9507913700060, 66919750327880, 470277075161481, 3301201972518219, 23154999755212270, 162319024049252950, 1137407684744763851 (list; graph; refs; listen; history; text; internal format)
 OFFSET 0,2 LINKS Table of n, a(n) for n=0..20. Index entries for linear recurrences with constant coefficients, signature (19,-131,389,-420). FORMULA a(n) = (7^(n+3)-6*5^(n+3)+8*4^(n+3)-3^(n+4))/24. - Yahia Kahloune, May 22 2013. MATHEMATICA CoefficientList[Series[1/((1-3x)(1-4x)(1-5x)(1-7x)), {x, 0, 20}], x] (* Harvey P. Dale, Apr 05 2019 *) CROSSREFS Sequence in context: A243420 A125431 A104116 * A135487 A025965 A276201 Adjacent sequences: A028023 A028024 A028025 * A028027 A028028 A028029 KEYWORD nonn,easy AUTHOR N. J. A. Sloane. STATUS approved

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Last modified May 23 10:34 EDT 2024. Contains 372760 sequences. (Running on oeis4.)