This site is supported by donations to The OEIS Foundation.

 Hints (Greetings from The On-Line Encyclopedia of Integer Sequences!)
 A233765 Number of toothpicks or D-toothpicks added at n-th stage to the structure of the toothpick "wide" triangle of A233764. 3
 0, 1, 2, 2, 4, 2, 4, 6, 8, 2, 4, 6, 10, 10, 8, 14, 16, 2, 4, 6, 10, 10, 10, 18, 24, 18, 8, 14, 22, 26, 16, 30, 32, 2, 4, 6, 10, 10, 10, 18, 24, 18, 10, 18, 28, 38, 30, 50, 54, 34, 8, 14, 22, 26, 22, 42, 56, 50, 16, 30, 46, 58, 32, 62, 64, 2, 4, 6, 10, 10 (list; graph; refs; listen; history; text; internal format)
 OFFSET 0,3 COMMENTS Essentially the first differences of A233764. First differs from A170905 at a(24). First differs from A233971 at a(25). First differs from A233781 at a(44). LINKS N. J. A. Sloane, Catalog of Toothpick and Cellular Automata Sequences in the OEIS EXAMPLE Written as an irregular triangle in which the row lengths is A011782 the sequence (starting from 1) begins: 1; 2; 2,4; 2,4,6,8; 2,4,6,10,10,8,14,16; 2,4,6,10,10,10,18,24,18,8,14,22,26,16,30,32; 2,4,6,10,10,10,18,24,18,10,18,28,38,30,50,54,34,8,14,22,26,22,42,56,50,16,30,46,58,32,62,64; Right border gives A000079. CROSSREFS Cf. A000079, A011782, A139251, A220501, A220521, A231349, A233764, A233781, A233971. Sequence in context: A106264 A278535 A152423 * A233781 A233971 A170905 Adjacent sequences:  A233762 A233763 A233764 * A233766 A233767 A233768 KEYWORD nonn,tabf AUTHOR Omar E. Pol, Dec 16 2013 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 12:18 EDT 2019. Contains 328160 sequences. (Running on oeis4.)