84246

Appears in sequences

• Expansion of (1-x)(1+x)/(1 - x - x^2 - x^3 + x^5).at n=21A052977
• G.f. satisfies A(x) = sqrt( (1 + 2*x*A(x)) / (1 - 2*x*A(x)) ).at n=8A138020
• Binomial transform of [1, 5, 15, 35, 70, 0, 0, 0, ...].at n=14A143132
• Numerator of Euler(n, 6/25).at n=4A156969
• Number of nX2 0..2 arrays with every row and column running average nondecreasing rightwards and downwards, and the number of instances of each value within one of each other.at n=17A200771