n,a(n)n=1…20的表%H A00 1141 J. H. Conway,听觉活跃衰变的奇妙奇妙化学在T.M封面和Gopina,EDS,通信和计算中的公开问题,Springer,NY 1987,pp.173-188.{%AA11141 S. R. Finch,康威常数〔断开链接〕%HA11141 S. R. Finch,康威常数[From the Wayback Machine]
%e A001141 The term after 3115 is obtained by saying "one 3, two 1's, one 5", which gives 132115.
%t A001141 RunLengthEncode[ x_List ] := (Through[ {First, Length}[ #1 ] ] &) /@ Split[ x ]; LookAndSay[ n_, d_:1 ] := NestList[ Flatten[ Reverse /@ RunLengthEncode[ # ] ] &, {d}, n - 1 ]; F[ n_ ] := LookAndSay[ n, 5 ][ [ n ] ]; Table[ FromDigits[ F[ n ] ], {n, 1, 11} ] (* _Zerinvary Lajos_, Mar 21 2007 *)
%Y A001141 Cf. A001155, A005150, A006751, A006715, A001140, A001143, A001145, A001151, A001154.
%K A001141 nonn,base,easy,nice
%O A001141 1,1
%A A001141 _N. J. A. Sloane_
# Content is available under The OEIS End-User License Agreement: http://oeis.org/LICENSE