42652

Appears in sequences

• Row 5 of square array defined in A047662.at n=11A047661
• Triangle read by rows: T(n,k) is the number of weighted lattice paths in L_n having k returns to the horizontal axis (both from above and below). The members of L_n are paths of weight n that start at (0,0) , end on the horizontal axis and whose steps are of the following four kinds: an (1,0)-step with weight 1, an (1,0)-step with weight 2, a (1,1)-step with weight 2, and a (1,-1)-step with weight 1. The weight of a path is the sum of the weights of its steps.at n=42A182898
• Number of compositions of n where the difference between largest and smallest parts equals 3 and adjacent parts are unequal.at n=20A214272
• Pseudoprimes to base 7, written in base 7.at n=18A262104
• Partial sums of the number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 49", based on the 5-celled von Neumann neighborhood.at n=39A270016
• Pierce Expansion of tan(1).at n=14A280092
• E.g.f. satisfies: A(x - Integral 3*A(x) dx) = x + Integral A(x) dx.at n=4A280571