

A093650


Natural numbers arranged in a square maze beginning 1, 2, 3, then moving right, then up, right, down, left, down, right, etc., and read by antidiagonals upwards.


1



1, 2, 6, 3, 5, 7, 12, 4, 8, 20, 13, 11, 9, 19, 21, 30, 14, 10, 18, 22, 42, 31, 29, 15, 17, 23, 41, 43, 56, 32, 28, 16, 24, 40, 44, 72, 57, 55, 33, 27, 25, 39, 45, 71, 73
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OFFSET

1,2


LINKS

Table of n, a(n) for n=1..45.
Index entries for sequences that are permutations of the natural numbers


EXAMPLE

a(3) = 6 because the maze begins 2 under 1, 3 under 2, 4 right of 3, 5 right of 2 and 6 right of 1.
Array begins:
1 67 20 ...
   
2 5 8 19 ...
   
34 9 18 ...
 
121110 17 ...
 
13141516 ...
...


CROSSREFS

Cf. A080335, A081347, A081348.
Other square mazes: A081344, A081349.
Sequence in context: A154048 A259018 A084355 * A064433 A163338 A323335
Adjacent sequences: A093647 A093648 A093649 * A093651 A093652 A093653


KEYWORD

nonn,tabl,more


AUTHOR

Michael Joseph Halm, May 15 2004


STATUS

approved



