The OEIS Foundation is supported by donations from users of the OEIS and by a grant from the Simons Foundation.

 Hints (Greetings from The On-Line Encyclopedia of Integer Sequences!)
 A073189 Integers 0..k three times, then 0..k+1 three times, etc. 17
 0, 0, 0, 0, 1, 0, 1, 0, 1, 0, 1, 2, 0, 1, 2, 0, 1, 2, 0, 1, 2, 3, 0, 1, 2, 3, 0, 1, 2, 3, 0, 1, 2, 3, 4, 0, 1, 2, 3, 4, 0, 1, 2, 3, 4, 0, 1, 2, 3, 4, 5, 0, 1, 2, 3, 4, 5, 0, 1, 2, 3, 4, 5, 0, 1, 2, 3, 4, 5, 6, 0, 1, 2, 3, 4, 5, 6, 0, 1, 2, 3, 4, 5, 6, 0, 1, 2, 3, 4, 5, 6, 7, 0, 1, 2, 3, 4, 5, 6, 7, 0, 1, 2, 3, 4 (list; graph; refs; listen; history; text; internal format)
 OFFSET 0,12 LINKS G. C. Greubel, Rows n=0..50 of triangle, flattened EXAMPLE 0; 0; 0; 0, 1; 0, 1; 0, 1; 0, 1, 2; 0, 1, 2; 0, 1, 2; 0, 1, 2, 3; 0, 1, 2, 3; ... MATHEMATICA Table[Range[0, k], {k, 0, 7}, {3}] // Flatten  (* Jean-François Alcover, Apr 18 2013 *) PROG (PARI) a(n)=local(m); m=floor(sqrt(6*n+6)-3/2)\3+1; (n-3*binomial(m, 2))%m CROSSREFS Sequence in context: A215592 A025684 A025678 * A194519 A025855 A215590 Adjacent sequences:  A073186 A073187 A073188 * A073190 A073191 A073192 KEYWORD nonn,tabf AUTHOR Michael Somos, Jul 19 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 31 08:46 EDT 2020. Contains 338101 sequences. (Running on oeis4.)