28103

Appears in sequences

• Numbers k such that the period of the continued fraction for sqrt(k) contains exactly 23 ones.at n=19A031791
• Area of consecutive Prime-Indexed Prime rectangles.at n=11A119658
• Consider the spiral of Theodorus (A072895). This sequence is closely related to A224269 and gives the number of k successive revolutions such that the triangles are closer to 360 degrees than any previous triangles.at n=26A227626
• Number of length-4 0..n arrays with no repeated value differing from the previous repeated value by other than plus two or minus 1.at n=11A269641
• Partial sums of the number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 467", based on the 5-celled von Neumann neighborhood.at n=34A272320
• Sequence of pairwise relatively prime numbers of class P_8 (see comment in A275246).at n=19A275253
• Number of crossing-maximal order types of n points in the plane.at n=8A305375
• Expansion of Sum_{k>=0} x^k / (1 - (k*x)^2)^(k+1).at n=9A360787