-2004

Appears in sequences

• Reversion of Pell numbers A000129(n+1).at n=11A104565
• Numerator of Hermite(n, 3/5).at n=4A158965
• G.f. A(x) satisfies: A(x)^2 + A(-x)^2 = 2 and A(x)^-2 - A(-x)^-2 = -8*x.at n=6A193618
• First differences of number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 155", based on the 5-celled von Neumann neighborhood.at n=27A270328
• 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=33A272048
• Expansion of Product_{k>=1} ((1 - x)^k - x^k)/((1 - x)^k + x^k).at n=14A307520
• Expansion of 1/(Sum_{k>=0} x^(k^2))^2.at n=28A363774
• Expansion of ( 1 + 9 * Sum_{k>=0} x^(2^k)/(1 - x^(2^k))^2 )^(1/3).at n=7A382336