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 A082942 (n^2+1)*(4*n^2+1)*(4*n^2+3). 2
 3, 70, 1615, 14430, 74035, 270478, 788655, 1960150, 4326595, 8714550, 16321903, 28815790, 48442035, 78146110, 121705615, 183874278, 270537475, 388879270, 547560975, 756911230, 1029127603, 1378489710, 1821583855, 2377539190, 3068275395, 3918761878, 4957288495 (list; graph; refs; listen; history; text; internal format)
 OFFSET 0,1 COMMENTS Volume of fundamental region for a sequence of 3-D lattices that converges to the FCC lattice. LINKS Vincenzo Librandi, Table of n, a(n) for n = 0..1000 FORMULA G.f.: (3+49*x+1188*x^2+4490*x^3+4595*x^4+1125*x^5+70*x^6)/(1-x)^7. - Bruno Berselli, Mar 23 2012 MATHEMATICA Table[(n^2+1)(4n^2+1)(4n^2+3), {n, 0, 30}] (* Harvey P. Dale, Mar 22 2012 *) CROSSREFS Cf. A083196. Sequence in context: A316737 A061173 A156598 * A000282 A322775 A338408 Adjacent sequences: A082939 A082940 A082941 * A082943 A082944 A082945 KEYWORD nonn,easy AUTHOR N. J. A. Sloane, Nov 17 2008 STATUS approved

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Last modified January 29 00:02 EST 2023. Contains 359905 sequences. (Running on oeis4.)