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A063418
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Tenth column (k=9) of septinomial array A063265.
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3
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4, 37, 180, 640, 1876, 4809, 11152, 23905, 48070, 91652, 167024, 292747, 495950, 815390, 1305328, 2040374, 3121472, 4683215, 6902700, 10010154, 14301584, 20153727, 28041600, 38558975, 52442130
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OFFSET
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0,1
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LINKS
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FORMULA
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a(n) = A063265(n+2, 9) = (n+1)*(n+2)*(n+3)*(n^6+48*n^5+967*n^4+10548*n^3+66676*n^2+239280*n+241920)/9!.
G.f.: (4-3*x-10*x^2+25*x^3-24*x^4+11*x^5-2*x^6)/(1-x)^10; the numerator polynomial is N7(8, x) from row n=8 of array A063266.
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CROSSREFS
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KEYWORD
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nonn,easy
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AUTHOR
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STATUS
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approved
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