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 A152731 a(n)+a(n+1)+a(n+2)=n^6. 2
 0, 0, 1, 63, 665, 3368, 11592, 31696, 74361, 156087, 300993, 542920, 927648, 1515416, 2383745, 3630375, 5376505, 7770336, 10990728, 15251160, 20803993, 27944847, 37017281, 48417776, 62600832, 80084368, 101455425, 127375983 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,4 COMMENTS 0+0+1=1^6;0+1+63=2^6;... LINKS FORMULA a(n)= -26n/3+20n^3/3-5n^2+7/3-2n^5+n^6/3+5n^4/3-7*A131713(n)/3. G.f.: x^3(1+x)(x^4+56x^3+246x^2+56x+1)/((1-x)^7*(1+x+x^2)). [From R. J. Mathar, Dec 12 2008] MATHEMATICA k0=k1=0; lst={k0, k1}; Do[kt=k1; k1=n^6-k1-k0; k0=kt; AppendTo[lst, k1], {n, 1, 5!}]; lst CROSSREFS Cf. A152728, A152729, A152730, A152725, A152726, A000212 Sequence in context: A184448 A181125 A022522 * A090028 A152725 A086578 Adjacent sequences:  A152728 A152729 A152730 * A152732 A152733 A152734 KEYWORD nonn AUTHOR Vladimir Joseph Stephan Orlovsky, Dec 11 2008 STATUS approved

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