47820

Appears in sequences

• Row 2 of table in A067640.at n=3A067637
• Table T(n,k) giving number of two-legged knot diagrams with n >= 0 self-intersections and k >= 0 tangencies, read by antidiagonals.at n=18A067640
• Column 3 of table in A067640.at n=2A067643
• a(n) = n * [1 + sum(k=1 to n) prime(k)].at n=30A083725
• Number of walks within N^3 (the first octant of Z^3) starting at (0,0,0) and consisting of n steps taken from {(-1, -1, 0), (0, 0, 1), (0, 1, -1), (1, 0, 0)}.at n=10A149857
• Antidiagonal sums of triangle A183202.at n=16A183203
• a(0)=a(1)=1, a(n) = least k > a(n-1) such that k*a(n-2) is an oblong number.at n=36A214963
• Decimal representation of the diagonal from the corner to the origin of the n-th stage of growth of the two-dimensional cellular automaton defined by "Rule 113", based on the 5-celled von Neumann neighborhood.at n=30A285839