42712

Appears in sequences

• Number of rooted trees with n nodes, 2 of which are labeled.at n=8A000524
• Convolution of Catalan numbers and powers of 2.at n=10A014318
• Number of nX3 binary arrays without the pattern 1 1 1 diagonally, vertically or horizontally.at n=5A188561
• Number of nX6 binary arrays without the pattern 1 1 1 diagonally, vertically or horizontally.at n=2A188564
• T(n,k)=Number of nXk binary arrays without the pattern 1 1 1 diagonally, vertically or horizontally.at n=30A188567
• T(n,k)=Number of nXk binary arrays without the pattern 1 1 1 diagonally, vertically or horizontally.at n=33A188567
• Number of n X 6 0..1 arrays avoiding 0 0 0 and 1 0 1 horizontally and 0 0 1 and 1 0 1 vertically.at n=7A207167