This site is supported by donations to The OEIS Foundation.

 Hints (Greetings from The On-Line Encyclopedia of Integer Sequences!)
 A070951 Number of 0's in n-th row of triangle in A070950. 6
 0, 0, 2, 1, 5, 2, 8, 3, 10, 7, 10, 9, 13, 8, 16, 9, 18, 16, 17, 15, 20, 20, 22, 19, 23, 24, 27, 22, 27, 25, 30, 24, 39, 28, 40, 25, 41, 31, 39, 34, 34, 42, 40, 38, 51, 36, 51, 44, 53, 46, 58, 44, 53, 47, 60, 46, 56, 55, 61, 50, 60, 53, 66, 49, 65, 75, 68, 66, 68, 72 (list; graph; refs; listen; history; text; internal format)
 OFFSET 0,3 COMMENTS a(n) + A070952(n) = 2*n + 1. - Reinhard Zumkeller, Jun 07 2013 LINKS Reinhard Zumkeller, Table of n, a(n) for n = 0..10000 MATHEMATICA steps = 100; Count[#, 0]& /@ MapIndexed[ Take[#1, {steps - First[#2] + 2, steps + First[#2]}]&, CellularAutomaton[30, {{1}, 0}, steps]] (* Jean-François Alcover, Oct 07 2013 *) PROG (Haskell) a070951 = length . filter (== 0) . a070950_row -- Reinhard Zumkeller, Jun 06 2013 CROSSREFS Sequence in context: A316891 A152992 A185727 * A076937 A014682 A111361 Adjacent sequences:  A070948 A070949 A070950 * A070952 A070953 A070954 KEYWORD nonn,easy,nice AUTHOR N. J. A. Sloane, May 19 2002 EXTENSIONS More terms from Hans Havermann, May 26 2002 STATUS approved

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recent
The OEIS Community | Maintained by The OEIS Foundation Inc.

Last modified October 18 08:08 EDT 2019. Contains 328146 sequences. (Running on oeis4.)