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Search: id:A134632
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| A134632 |
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5*n^5 + 3*n^3 - 2*n^2. Coefficients and exponents are the prime numbers in decreasing order. |
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+0
1
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| 0, 6, 176, 1278, 5280, 15950, 39456, 84966, 165248, 297270, 502800, 809006, 1249056, 1862718, 2696960, 3806550, 5254656, 7113446, 9464688
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OFFSET
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0,2
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FORMULA
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a(n) = 5*n^5 + 3*n^3 - 2*n^2.
G.f.: 2x*(3+70x+156x^2+66x^3+5x^4)/(1-x)^6. - R. J. Mathar (mathar(AT)strw.leidenuniv.nl), Nov 14 2007
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EXAMPLE
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a(4)=5280 because 4^5=1024, 5*1024=5120, 4^3=64, 3*64=192, 4^2=16, 2*16=32 and we can write 5120+192-32=5280.
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CROSSREFS
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Cf. A000290, A000578, A000584, A045991, A100019, A133072.
Sequence in context: A166762 A055165 A071095 this_sequence A024277 A012177 A012227
Adjacent sequences: A134629 A134630 A134631 this_sequence A134633 A134634 A134635
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KEYWORD
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nonn
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AUTHOR
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Omar E. Pol (info(AT)polprimos.com), Nov 04 2007
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