Search: id:A134631
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%I A134631
%S A134631 0,4,144,1152,4960,15300,38304,83104,162432,293220,497200,801504,
%T A134631 1239264,1850212,2681280,3787200,5231104,7085124,9430992
%N A134631 5*n^5 - 3*n^3 + 2*n^2. Coefficients and exponents are the prime numbers 
               in decreasing order.
%F A134631 a(n) = 5*n^5 - 3*n^3 + 2*n^2.
%F A134631 G.f.: 4x*(1+30x+87x^2+32x^3)/(1-x)^6. - R. J. Mathar (mathar(AT)strw.leidenuniv.nl), 
               Nov 14 2007
%e A134631 a(4)=4960 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=4960.
%Y A134631 Cf. A000290, A000578, A000584, A045991, A100019, A133071.
%Y A134631 Sequence in context: A053891 A053897 A017294 this_sequence A036511 A060870 
               A084703
%Y A134631 Adjacent sequences: A134628 A134629 A134630 this_sequence A134632 A134633 
               A134634
%K A134631 nonn
%O A134631 0,2
%A A134631 Omar E. Pol (info(AT)polprimos.com), Nov 04 2007

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