login
This site is supported by donations to The OEIS Foundation.

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A322050 a(n) = A319019(n)/8. 7
1, 1, 5, 1, 7, 3, 15, 1, 7, 6, 30, 5, 26, 7, 35, 1, 7, 6, 30, 8, 48, 15, 71, 7, 33, 18, 86, 14, 70, 17, 81, 1, 7, 6, 30, 8, 48, 17, 81, 9, 50, 29, 141, 25, 131, 30, 152, 6, 27, 20, 96, 25, 147, 44, 208, 17, 81, 42, 198, 32, 158, 37, 173, 1, 7, 6, 30, 8 (list; graph; refs; listen; history; text; internal format)
OFFSET

2,3

COMMENTS

This is the number of new cells turned ON at the n-th generations in a 45-degree sector of the knights-move analog of the Ulam-Warburton cellular automaton defined in A319018.

LINKS

Rémy Sigrist, Table of n, a(n) for n = 2..65536 (first 2048 terms from Hugo Pfoertner)

Rémy Sigrist, C# program for A322050

EXAMPLE

This sequence may be redrawn as an array with rows of lengths 1, 2, 4, 8, 16, ...:

1,

1, 5,

1, 7, 3, 15,

1, 7, 6, 30, 5, 26, 7, 35,

1, 7, 6, 30, 8, 48, 15, 71, 7, 33, 18, 86, 14, 70, 17, 81,

1, 7, 6, 30, 8, 48, 17, 81, 9, 50, 29, 141, 25, 131, 30, 152, 6, 27, 20, 96, 25, 147, 44, 208, 17, 81, 42, 198, 32, 158, 37, 173,

...

See A322048 for the final element of these rows; see A322049 for the sequence to which the rows converge, with additional formulas for the n-th element of each (sufficiently long) row. - M. F. Hasler, Dec 18 2018

PROG

(C#) See Links section.

CROSSREFS

Cf. A319018, A319019, A322048, A322049.

Sequence in context: A011508 A195429 A158552 * A021663 A099218 A198129

Adjacent sequences:  A322047 A322048 A322049 * A322051 A322052 A322053

KEYWORD

nonn,tabf

AUTHOR

N. J. A. Sloane, Dec 15 2018

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.

License Agreements, Terms of Use, Privacy Policy. .

Last modified August 18 04:50 EDT 2019. Contains 326072 sequences. (Running on oeis4.)