-843

Appears in sequences

• Numerators of coefficients in the e.g.f. a(x) such that a(a(x)) = exp(x) - 1.at n=9A052122
• Expansion of (1-2*x)/(1+x-x^2).at n=13A075193
• Sum of Lucas numbers and inverted Lucas numbers: a(n) = A000032(n)*A075193(n).at n=15A075270
• Riordan array ((1-x^2)/(1+3x+x^2),x/(1+3x+x^2)).at n=28A110168
• a(n)=A128056(n)/A128055(n).at n=13A128053
• a(n)=A128056(n)/A128055(n).at n=14A128053
• a(n) = (3^n+6*(-4)^n)/7.at n=5A166035
• Triangle T(n,k) read by rows: the real part of the coefficient [x^k] of (1-x)^(n+1) * Sum_{s>=0} ((2*s + 1 + 2*i)^n)*x^s, where i is the imaginary unit.at n=16A179087
• Triangle T(n,k) read by rows: the real part of the coefficient [x^k] of (1-x)^(n+1) * Sum_{s>=0} ((2*s + 1 + 2*i)^n)*x^s, where i is the imaginary unit.at n=19A179087
• G.f.: Product_{n>=1} (1 - Lucas(n)*x^n + (-1)^n*x^(2*n)) where Lucas(n) = A000204(n).at n=16A203860
• G.f.: Product_{n>=1} (1 - Lucas(n)*x^n + (-1)^n*x^(2*n)) where Lucas(n) = A000204(n).at n=38A203860
• Alternating row sums of Riordan triangle A110162.at n=7A219233
• First differences of number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 245", based on the 5-celled von Neumann neighborhood.at n=15A271007
• First differences of number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 429", based on the 5-celled von Neumann neighborhood.at n=17A272114
• First differences of number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 501", based on the 5-celled von Neumann neighborhood.at n=15A272567