21470

Appears in sequences

• s(1)t(n) + s(2)t(n-1) + ... + s(k)t(n-k+1), where k = [ n/2 ], s = (odd natural numbers), t = A001950 (upper Wythoff sequence).at n=35A025114
• Number of partitions satisfying 0 < cn(0,5) + cn(1,5) + cn(4,5).at n=37A039900
• Numerators of continued fraction convergents to sqrt(835).at n=8A042612
• Sequence of which A078783 is the Recamán transform.at n=40A117073
• Number at start of segment n of A117073.at n=13A117074
• Number of (n+2)X(n+2) 0..1 arrays with every 3X3 subblock having equal diagonal elements or equal antidiagonal elements, and new values 0..1 introduced in row major order.at n=2A203915
• Number of (n+2)X5 0..1 arrays with every 3X3 subblock having equal diagonal elements or equal antidiagonal elements, and new values 0..1 introduced in row major order.at n=2A203918
• T(n,k)=Number of (n+2)X(k+2) 0..1 arrays with every 3X3 subblock having equal diagonal elements or equal antidiagonal elements, and new values 0..1 introduced in row major order.at n=12A203923
• Number of n X 7 arrays of the minimum value of corresponding elements and their horizontal or vertical neighbors in a random, but sorted with lexicographically nondecreasing rows and nonincreasing columns, 0..1 n X 7 array.at n=13A219501