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 A011896 [ n(n-1)(n-2)/14 ]. 2
 0, 0, 0, 0, 1, 4, 8, 15, 24, 36, 51, 70, 94, 122, 156, 195, 240, 291, 349, 415, 488, 570, 660, 759, 867, 985, 1114, 1253, 1404, 1566, 1740, 1926, 2125, 2338, 2564, 2805, 3060, 3330, 3615, 3916, 4234, 4568, 4920, 5289, 5676, 6081, 6505, 6949, 7412, 7896 (list; graph; refs; listen; history; text; internal format)
 OFFSET 0,6 LINKS FORMULA G.f.: x^4*(1+x-x^2+2*x^3-x^4+x^5)/((1-x)^3*(1-x^7)) PROG (PARI) a(n)=n*(n-1)*(n-2)\14 CROSSREFS A055610(n)=-A011896(2-n) Sequence in context: A213035 A014146 A049845 * A333266 A024624 A098196 Adjacent sequences:  A011893 A011894 A011895 * A011897 A011898 A011899 KEYWORD nonn AUTHOR EXTENSIONS Additional comments from Michael Somos, Jun 02 2000. STATUS approved

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Last modified June 25 02:03 EDT 2021. Contains 345445 sequences. (Running on oeis4.)