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Positions of 1's in A106216.
3

%I #3 Mar 30 2012 18:36:45

%S 0,3,24,30,48,57,63,72,81,99,105,114,120,129,132,135,141,147,156,159,

%T 168,177,180,195,198,201,204,207,210,222,243,249,252,261,267,279,282,

%U 285,297,309,312,315,327,333,342,351,375,387,393,399,402,408,411,414

%N Positions of 1's in A106216.

%F a(n) = 0 (mod 3) for all n.

%o (PARI)

%Y Cf. A106216, A106218, A106219.

%K nonn

%O 0,2

%A _Paul D. Hanna_, May 01 2005