A276324 - OEIS

%I #6 Aug 30 2016 14:46:30

%S 1,4,5,7,8,14,15,17,18,19,20,23,24,30,31,34,35,40,41,43,44,45,46,49,

%T 50,54,56,59,60,62,63,65,68,69,72,77,78,81,82,85,86,89,90,93,94,95,96,

%U 101,103,106,108,111,113,114,116,119,120,122,123,125,127,128

%N Antidiagonal indices of Greedy Queens (see A065188).

%C a(n) is the index of the antidiagonal of the n-th queen.

%H Alois P. Heinz, <a href="/A276324/b276324.txt">Table of n, a(n) for n = 1..10000</a>

%e The first queen is in the first antidiagonal, the second queen is in the fourth antidiagonal, ... .  The antidiagonals with indices 2, 3, 6, 9, ... do not contain a queen:

%e :

%e :  Q//// ...

%e :  ///Q/ ...

%e :  /Q/// ...

%e :  ////Q ...

%e :  //Q// ...

%e :  ///// ...

%e :  .....

%Y Cf. A065188, A276325.

%K nonn

%O 1,2

%A _Alois P. Heinz_, Aug 30 2016