19956

Appears in sequences

• Number of graphical partitions of 2n.at n=20A000569
• Numbers k such that the continued fraction for sqrt(k) has even period and if the last term of the periodic part is deleted the central term is 94.at n=37A031592
• Numbers having four 3's in base 9.at n=3A043468
• Number of noncongruent integer-sided tetrahedra with largest side n.at n=14A097125
• Expansion of Product_{k>=1} 1 / (1 - 2*x^k)^2.at n=9A266943
• Number of nX3 0..1 arrays with each 1 horizontally or vertically adjacent to 1 or 2 1s.at n=5A295035
• Number of nX6 0..1 arrays with each 1 horizontally or vertically adjacent to 1 or 2 1s.at n=2A295038
• T(n,k)=Number of nXk 0..1 arrays with each 1 horizontally or vertically adjacent to 1 or 2 1s.at n=30A295040
• T(n,k)=Number of nXk 0..1 arrays with each 1 horizontally or vertically adjacent to 1 or 2 1s.at n=33A295040
• Expansion of Sum_{k>=0} x^(2*k)/Product_{j=1..k} (1 - 3 * j * x).at n=9A353262
• a(n) = 4*(23 - 17*n + 8*n^2).at n=25A387458