35891

Appears in sequences

• Convolution of A073145 with A056594.at n=32A075419
• a(n) is the sum of the (1,2)- and (1,3)-entries of the matrix P^n + T^n, where the 3 X 3 matrices P and T are defined by P = [0,1,0; 0,0,1; 1,0,0] and T = [0,1,0; 0,0,1; 1,1,1].at n=19A109523
• Diagonal sums of Riordan array (1/(1+x),x(1+x)/(1-x)).at n=20A112476
• 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, 0), (-1, 1, 0), (0, 0, -1), (0, 1, -1), (1, 0, 1)}.at n=9A149323
• Number of binary strings of length n with no substrings equal to 0001 or 1000.at n=13A164398
• a(n) = n*(4*n^2 - 3*n + 5)/6.at n=37A174723
• Number of (n+6)X12 0..1 matrices with each 7X7 subblock idempotent.at n=6A224586
• Number of (n+6)X13 0..1 matrices with each 7X7 subblock idempotent.at n=5A224587
• Partial sums of the number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 145", based on the 5-celled von Neumann neighborhood.at n=37A270288
• Number of nX5 0..1 arrays with every element equal to 0 or 1 horizontally or antidiagonally adjacent elements, with upper left element zero.at n=14A301787
• Expansion of g.f. Sum_{n>=1} q^n/(1-q^n-q^(2*n)-q^(3*n)).at n=18A368687
• G.f. A(x) satisfies 2 = Sum_{n=-oo..+oo} x^n * (1 + x^n)^n * (1+x)^(n^2) * A(x)^n.at n=7A379198
• Numbers k such that sigma(k) = phi(k) + tau(k) + pi(k).at n=3A389856