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

Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A081344 Natural numbers in square maze arrangement, read by antidiagonals. 5
1, 2, 4, 9, 3, 5, 10, 8, 6, 16, 25, 11, 7, 15, 17, 26, 24, 12, 14, 18, 36, 49, 27, 23, 13, 19, 35, 37, 50, 48, 28, 22, 20, 34, 38, 64, 81, 51, 47, 29, 21, 33, 39, 63, 65, 82, 80, 52, 46, 30, 32, 40, 62, 66, 100, 121, 83, 79, 53, 45, 31, 41, 61, 67, 99, 101, 122, 120, 84, 78, 54 (list; table; graph; refs; listen; history; internal format)
OFFSET

1,2

COMMENTS

Arrange the natural numbers by taking clockwise and counter-clockwise turns. Begin (LL) and then repeat (RRR)(LLL).

EXAMPLE

The arrangement begins

1 4 5 16

2 3 6 15

9 8 7 14

10 11 12 13

CROSSREFS

The main diagonal is A002061. The following appear within interlaced sequences : A016754, A001844, A053755, A004120. The first row is A081345. The first column is A081346.

Sequence in context: A133057 A155523 A019912 * A021405 A201946 A161360

Adjacent sequences:  A081341 A081342 A081343 * A081345 A081346 A081347

KEYWORD

nonn,tabl

AUTHOR

Paul Barry (pbarry(AT)wit.ie), Mar 19 2003

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Transforms | Puzzles | Hot | Classics
Recent Additions | More pages | Superseeker | Maintained by The OEIS Foundation Inc.

Content is available under The OEIS End-User License Agreement .

Last modified February 15 20:26 EST 2012. Contains 205852 sequences.