-1308

Appears in sequences

• Triangle of coefficients of (1 - x)^n*U(n,-(3*x - 2)/(2*x - 2)), where U(n,x) is the n-th Chebyshev polynomial of the second kind.at n=26A123027
• G.f.: (1+x+x^2-sqrt(1+2x+3x^2-2x^3+x^4))*2.at n=16A129507
• a(n) = (-6*n^7 + 154*n^6 - 1533*n^5 + 7525*n^4 - 18879*n^3 + 22561*n^2 - 7302*n + 2520)/2520.at n=11A161710
• First differences of number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 419", based on the 5-celled von Neumann neighborhood.at n=27A272048
• Triangle read by rows: coefficients of the characteristic polynomial of the n-th submatrix of A191898.at n=30A293147
• Expansion of Product_{k>0} theta_4(q^k)/theta_3(q^k), where theta_3() and theta_4() are the Jacobi theta functions.at n=17A320970