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A162784 a(n) = (A048883(n)+1)/2. 1

%I #8 Nov 15 2017 05:59:41

%S 1,2,2,5,2,5,5,14,2,5,5,14,5,14,14,41,2,5,5,14,5,14,14,41,5,14,14,41,

%T 14,41,41,122,2,5,5,14,5,14,14,41,5,14,14,41,14,41,41,122,5,14,14,41,

%U 14,41,41,122,14,41,41,122,41,122,122,365,2,5,5,14

%N a(n) = (A048883(n)+1)/2.

%C Rows of A079318 when written as a triangle converge to this sequence.

%F a(n) = A151712(n)/2.

%e If written as a triangle:

%e 1;

%e 2;

%e 2,5;

%e 2,5,5,14;

%e 2,5,5,14,5,14,14,41;

%e 2,5,5,14,5,14,14,41,5,14,14,41,14,41,41,122;

%t a048883[n_] := 3^DigitCount[n, 2, 1];

%t a[n_] := (a048883[n] + 1)/2;

%t Array[a, 70, 0] (* _Jean-François Alcover_, Nov 15 2017 *)

%Y Cf. A048883, A079314, A079318, A151712.

%K nonn

%O 0,2

%A _Omar E. Pol_, Jul 19 2009, Jul 23 2009

%E More terms from _Max Alekseyev_, Feb 23 2012

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Last modified June 30 13:28 EDT 2024. Contains 373871 sequences. (Running on oeis4.)