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a(n) = number of occurrences of n as a trinomial coefficient (in A046816).
0

%I #7 Oct 16 2023 12:56:11

%S 3,6,6,6,10,6,6,6,12,6,9,6,6,12,6,6,6,6,12,12,6,6,6,6,6,6,12,6,12,6,6,

%T 6,6,12,12,6,6,6,6,6,9,6,6,12,6,6,6,6,6,6,6,6,6,12,15,6,6,6,12,6,6,6,

%U 6,6,12,6,6,6,9,6,9,6,6,6,6,6,12,6,6,6,6,6,12,6,6,6,6,6,10,12,6,6,6,6,6,6,6

%N a(n) = number of occurrences of n as a trinomial coefficient (in A046816).

%C a(n) <= 3 * A003016(n).

%e a(2) = 3 since, 2 appears only 3 times in A046816.

%Y Cf. A046816, A003016.

%K nonn

%O 2,1

%A _Lior Manor_, Apr 21 2004