A163904 - OEIS

%I #3 Mar 31 2012 13:21:18

%S 1,1,2,6,2,6,3,3,6,3,1,6,6,3,4,3,3,3,6,8,8,1,3,4,3,4,4,2,1,2,2,2,2,2,

%T 2,2,6,2,4,4,4,4,8,2,6,6,6,2,4,4,8,8,4,6,6,12,6,12,2,4,8,4,4,12,6,18,

%U 6,6,12,6,2,4,8,4,6,12,18,6,3,12,18,6,9,2,2,8,6,6,12,18,3,3,6,18,18

%N Array A(i,j): Cycle size of each A054238(i,j) in permutation A163355, listed antidiagonally as A(0,0), A(0,1), A(1,0), A(0,2), A(1,1), A(2,0), ...

%H A. Karttunen, <a href="/A163904/b163904.txt">Table of n, a(n) for n = 0..32895</a>

%e The top left 8x8 corner of this array:

%e 1 1 6 3 1 3 1 1

%e 2 2 3 6 3 3 2 2

%e 6 6 6 3 4 2 4 2

%e 3 3 6 3 2 4 4 2

%e 4 8 4 2 4 4 4 2

%e 8 4 2 4 8 8 4 2

%e 2 2 8 8 4 8 2 2

%e 2 2 4 4 4 8 2 2

%Y a(n) = A163890(A054238(n)) = A163890(A163357(n)). Positions of 1's: A165403. See also A163898, A163899.

%K nonn,tabl

%O 0,3

%A _Antti Karttunen_, Sep 19 2009