29308

Appears in sequences

• Consider a room of size r X s where rs = 2n and 1 <= r <= s; count ways to arrange n Tatami mats in room; a(n) = total number of ways for all choices of r and s. Two arrangements are considered the same if one is a rotation or reflection of the other.at n=28A052270
• a(n) = Sum_{i=1..n, j=1..n, gcd(i,j)=1} (n+1-i)*(n+1-j).at n=19A115004
• Poincaré series [or Poincare series] P(C_{5,2}(0); t).at n=17A124638
• Sequence related to Kashaev's invariant for the (7,2)-torus knot.at n=6A208734
• Greatest integer k such that k/2^n < sqrt(1/5).at n=16A293334