25318

Appears in sequences

• Positions of incrementally largest terms in the continued fraction for Euler's constant gamma (A002852).at n=12A033092
• Square array where T(n,k) = Sum_{j=0..k} C(n+2*j,j)*C(n+2*j,k-j), read by antidiagonals.at n=42A137634
• a(n) = Sum_{k=0..n} C(2k+2,k)*C(2k+2,n-k) ; equals row 2 of square array A137634 ; also equals the convolution of A137635 and the self-convolution of A073157.at n=6A137637
• Number of planar n X n X n binary triangular grids symmetric both under 120 degree rotation and reflection with no more than 2 ones in any 5 X 5 X 5 subtriangle.at n=23A153919
• Number of (n+1) X (4+1) 0..2 arrays colored with the upper median value of each 2 X 2 subblock.at n=9A235950
• Number of nX4 0..1 arrays with every element equal to 1, 2, 4, 6 or 7 king-move adjacent elements, with upper left element zero.at n=12A298656