22364160

Appears in sequences

• Number of Barlow packings with group P3(bar)m1(S) that repeat after 2n layers.at n=27A011951
• Exponential Riordan array (1,4*x+6*x^2+4*x^3+x^4).at n=32A187084
• 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 99", based on the 5-celled von Neumann neighborhood.at n=24A278873
• 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 107", based on the 5-celled von Neumann neighborhood.at n=26A278901
• a(n) is the number of subsets of {1..n} that contain exactly 4 odd numbers.at n=28A331419
• a(n) = [x^n] -3/(2*x - 1)^5.at n=12A344564