23965

Appears in sequences

• Expansion of e.g.f.: cos(arctan(x)+log(x+1))=1-4/2!*x^2+6/3!*x^3+13/4!*x^4-20/5!*x^5...at n=8A012964
• Convoluted convolved Fibonacci numbers G_8^(r).at n=13A089115
• Number of planar n X n X n binary triangular grids symmetric both under 120 degree rotation and reflection with no more than 9 ones in any 5 X 5 X 5 subtriangle.at n=12A153970
• Half the number of (n+1) X 2 binary arrays with no 2X2 subblock having exactly 2 ones.at n=10A183774
• Number of (n+1)X(2+1) 0..1 arrays with no element having a strict majority of its horizontal, vertical, diagonal and antidiagonal neighbors equal to one.at n=5A231800
• Number of (n+1)X(6+1) 0..1 arrays with no element having a strict majority of its horizontal, vertical, diagonal and antidiagonal neighbors equal to one.at n=1A231804
• T(n,k)=Number of (n+1)X(k+1) 0..1 arrays with no element having a strict majority of its horizontal, vertical, diagonal and antidiagonal neighbors equal to one.at n=22A231806
• T(n,k)=Number of (n+1)X(k+1) 0..1 arrays with no element having a strict majority of its horizontal, vertical, diagonal and antidiagonal neighbors equal to one.at n=26A231806
• Number of squarefree parts in the partitions of n into 8 parts.at n=41A309461
• Convolution of A000219 and A001477.at n=15A360489