A369242 - OEIS

%I #10 Jan 22 2024 13:01:29

%S 0,0,0,0,0,2,1,3,11,24,53,176,339,1510,2573

%N Number of representations of n! - 1 as a sum (p*q + p*r + q*r) with three odd primes p <= q <= r.

%F a(n) = A369054(A033312(n)).

%F For n >= 4, a(n) = A369055(n!/4).

%o (PARI) A369242(n) = A369054(n!-1); \\ Uses also the program given in A369054.

%Y Cf. A033312, A369054.

%Y Cf. also A369241, A369245.

%K nonn,hard,more

%O 0,6

%A _Antti Karttunen_, Jan 21 2024