37438

Appears in sequences

• a(n) = Sum_{k=0..2n} (k+1) * A027023(n,2n-k).at n=9A027044
• "BGK" (reversible, element, unlabeled) transform of 1,1,1,1,...at n=32A032058
• Number of fixed polyforms with n cells of two types: unit squares and isosceles right triangles whose short sides have unit length. Cells are joined along sides of equal lengths.at n=5A391001