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%I A160422
%S A160422 0,7,19,41,63,87,131,193,235,259,303,367,435,527,675,837,919,943,987,
%T A160422 1051,1119,1211,1359,1523,1631,1723,1875,2071,2299,2631,3087,3489,
%U A160422 3651,3675,3719,3783,3851,3943,4091,4255,4363,4455,4607,4803,5031,5363,5819,6223,6411
%N A160422 Number of "ON" cells at n-th stage in simple 2-dimensional cellular automaton whose virtual skeleton is a polyedge as the toothpick structure of A139250 but with toothpicks of length 6.
%C A160422 a(n) is also the number of grid points that are covered after n-th stage by an polyedge as the toothpick structure of A139250, but with toothpicks of length 6.
%H A160422 David Applegate, Omar E. Pol and N. J. A. Sloane,基于细胞自动机的牙签序列及其他序列国会议员，第206卷（2010），157—191页。[定理6中有一个类型：（13）应该读取u（n）＝4.3 ^（Wt（n-1）-1），对于n>＝2。OEIS中的Toothpick目录和元胞自动机序列%F A160422 a(n) = A147614(n)+4*A139250(n) = A160420(n)+2*A139250(n) since each toothpick covers exactly four more grid points than the corresponding toothpick in A147614.
%Y A160422 Cf. A139250, A139251, A147614, A160118, A160120, A160170, A160420, A160430.
%K A160422 nonn
%O A160422 0,2
%A A160422 _Omar E. Pol_, May 20 2009
%E A160422 More terms and formula from _Nathaniel Johnston_, Nov 13 2010
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