49101

Appears in sequences

• Generalized Fibonacci numbers.at n=8A006603
• Signed generalized Fibonacci numbers.at n=8A080244
• Numbers n such that 9*10^n + 8*R_n - 5 is prime, where R_n = 11...1 is the repunit (A002275) of length n.at n=8A103108
• Binomial transform of [1, 4, 10, 20, 0, 0, 0, ...].at n=25A143131
• Number of walks within N^3 (the first octant of Z^3) starting at (0,0,0) and consisting of n steps taken from {(-1, -1, 1), (-1, 1, -1), (1, -1, 0), (1, 0, 1), (1, 1, 1)}.at n=8A150746
• Number of nX5 binary arrays with top left value 1 and no two ones adjacent horizontally, vertically, diagonally or antidiagonally.at n=6A228503
• Number of nX7 binary arrays with top left value 1 and no two ones adjacent horizontally, vertically, diagonally or antidiagonally.at n=4A228505
• T(n,k)=Number of nXk binary arrays with top left value 1 and no two ones adjacent horizontally, vertically, diagonally or antidiagonally.at n=59A228506
• T(n,k)=Number of nXk binary arrays with top left value 1 and no two ones adjacent horizontally, vertically, diagonally or antidiagonally.at n=61A228506