A057041 Let R(i,j) be the rectangle with antidiagonals 1; 2,3; 4,5,6; ...; each k is an R(i(k),j(k)) and A057041(n)=j(F(n)), where F(n) is the n-th Fibonacci number.

1, 1, 2, 1, 2, 3, 3, 1, 3, 1, 3, 10, 21, 2, 21, 4, 57, 45, 6, 22, 81, 56, 24, 298, 54, 379, 461, 193, 377, 656, 993, 520, 1263, 867, 2492, 29, 3860, 6735, 7143, 3817, 12561, 12231, 24299, 11053, 734