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A030003 (prime(n)-3)(prime(n)-5)(prime(n)-7)/48. 1

%I #9 Aug 03 2014 14:01:15

%S 0,0,0,4,10,35,56,120,286,364,680,969,1140,1540,2300,3276,3654,4960,

%T 5984,6545,8436,9880,12341,16215,18424,19600,22100,23426,26235,37820,

%U 41664,47905,50116,62196,64824,73150,82160,88560,98770,109736,113564,134044,138415

%N (prime(n)-3)(prime(n)-5)(prime(n)-7)/48.

%C It appears that a(n) is a subset of binomial(f(n),3) where f(n)=floor((3*n-7)/3). - Gary Detlefs, Apr 14 2012

%H T. D. Noe, <a href="/A030003/b030003.txt">Table of n, a(n) for n = 2..1000</a>

%t Table[(p - 3) (p - 5) (p - 7)/48, {p, Prime[Range[2, 50]]}] (* _T. D. Noe_, Apr 16 2012 *)

%K nonn

%O 2,4

%A _N. J. A. Sloane_.

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Last modified April 25 01:35 EDT 2024. Contains 371964 sequences. (Running on oeis4.)