cp's OEIS Frontend

A194445 Number of toothpicks or D-toothpicks added at n-th stage to the structure of A194444.

%I A194445 #32 Mar 24 2013 13:47:30
%S A194445 0,1,2,4,4,4,8,11,8,4,8,16,24,12,20,25,16,4,8,16,24,28,36,42,44,20,24,
%T A194445 40,64,32,44,53,32,4,8,16,24,28,36,44,52,42,48,60,100,68,84,83,84,28,
%U A194445 24,44,72,84,104,116,132,54,56,92,144,72,92,109,64,4
%N A194445 Number of toothpicks or D-toothpicks added at n-th stage to the structure of A194444.
%C A194445 Essentially the first differences of A194444.
%C A194445 First differs from A220525 at a(13). - _Omar E. Pol_, Mar 23 2013
%H A194445 N. J. A. Sloane, <a href="/wiki/Catalog_of_Toothpick_and_CA_Sequences_in_OEIS">Catalog of Toothpick and Cellular Automata Sequences in the OEIS</a>
%H A194445 <a href="/index/To#toothpick">Index entries for sequences related to toothpick sequences</a>
%F A194445 It appears that a(2^k+1) = 4, if k >= 1.
%F A194445 a(n) = A194435(n)/4. - _Omar E. Pol_, Mar 23 2013
%e A194445 Contribution from _Omar E. Pol_, Dec 05 2012 (Start):
%e A194445 Triangle begins:
%e A194445 0;
%e A194445 1;
%e A194445 2;
%e A194445 4,4;
%e A194445 4,8,11,8;
%e A194445 4,8,16,24,12,20,25,16;
%e A194445 4,8,16,24,28,36,42,44,20,24,40,64,32,44,53,32;
%e A194445 (End)
%Y A194445 Row lengths give 1 together with A011782. Right border gives 0 together with A000079.
%Y A194445 Cf. A139250, A139251, A172311, A182635, A182839, A194271, A194433, A194435, A194441, A194443, A194444, A212009.
%K A194445 nonn,tabf
%O A194445 0,3
%A A194445 _Omar E. Pol_, Aug 24 2011
%E A194445 More terms from _Omar E. Pol_, Mar 23 2013