48783

Appears in sequences

• The sequence e when b=[ 1,0,1,1,1,... ].at n=48A042953
• Number of n X n binary arrays symmetric under horizontal reflection with all ones connected only in a 1000-1111-0010 pattern in any orientation.at n=11A146398
• Triangle of 4 - restricted Eulerian numbers as polynomials used in exponential data smoothing: m(p,k,x)=((-1)^k*(1 - x)^(p + k)/(k!(p - 1)!))*Sum[(p - 1 + j)!*j^k*x^j/(j!), {j, 0, Infinity}]/x;n=6; t(m,l)=coefficients((-1)^m*m!*M[n, m, x])/n.at n=30A152249
• Product_{n>=1} (1 + x^n)^a(n) = 1 + Sum_{n>=1} prime(n+1) * x^n.at n=27A353160
• For each cell of a polyomino let b be the number of cells that are in the same row or in the same column (including itself). Cells beyond gaps do not count. a(n) is the sum of the b values of all cells of all free polyominoes with n cells.at n=8A365835