22906492244
domain: N
Appears in sequences
- Barlow packings with group R3(bar)m(SO) that repeat after 6n+3 layers.at n=35A011954
- a(n) = (4/3)*(4^n - 1).at n=17A080674
- Duplicate of A080674.at n=16A155721
- Numerator of c(n) = 2^(2*n)*(2^(2*n) - 1)/(2*n)!, a coefficient used in the expansion of tan(x) as Sum_{n>=1} c(n)*|Bernoulli(2*n)|*x^(2*n-1).at n=17A225845
- Decimal representation of the n-th iteration of the "Rule 133" elementary cellular automaton starting with a single ON (black) cell.at n=18A267457
- a(n) = J(n) if n odd, or 4*J(n) if n even, where J = Jacobsthal numbers A001045.at n=34A270797
- Decimal representation of the x-axis, from the origin to the right edge, of the n-th stage of growth of the two-dimensional cellular automaton defined by "Rule 553", based on the 5-celled von Neumann neighborhood.at n=34A282579