%I #11 Jan 05 2021 21:31:05

%S 1,2,8,3,7,9,4,6,10,24,15,5,11,23,25,16,14,12,22,26,48,35,17,13,21,27,

%T 47,49,36,34,18,20,28,46,50,80,63,37,33,19,29,45,51,79,81,64,62,38,32,

%U 30,44,52,78,82,120,99,65,61,39,31,43,53,77,83,119,121,100,98,66,60,40

%N Square maze arrangement of the natural numbers, read by antidiagonals.

%H <a href="/index/Per#IntegerPermutation">Index entries for sequences that are permutations of the natural numbers</a>

%e Starting with 1,2,3,4, turn (LL) and then repeat (RRR)(LLL) to get:

%e .

%e 1 8---9 24 ...

%e | | | |

%e 2 7 10 23 ...

%e | | | |

%e 3 6 11 22 ...

%e | | | |

%e 4---5 12 21 ...

%e | |

%e 15--14--13 20 ...

%e | |

%e 16--17--18--19 ...

%e ...

%Y Cf. A081344, A093650.

%Y First row is A081351. First column is A081350.

%Y Main diagonal is A081352. Main subdiagonal is 2*A000217(n+1).

%K nonn,tabl

%O 0,2

%A _Paul Barry_, Mar 19 2003