30219

Appears in sequences

• a(n) = min( x : x^4 + n^4 = 0 mod (x+n-1) ).at n=22A066487
• Draw a line through every pair of points with coordinates (x, 1) and (x', 2) with x, x' in 1..n, and then count the number of intersection points above the line y = 2.at n=25A092275
• Sum of squares of three consecutive primes.at n=24A133529
• Number of 4 X 4 X 4 triangular nonnegative integer arrays, symmetric under 120 degree rotation, with all sums of an element and its neighbors <= n.at n=40A166212
• Decimal representation of the x-axis, from the left edge to the origin, of the n-th stage of growth of the two-dimensional cellular automaton defined by "Rule 387", based on the 5-celled von Neumann neighborhood.at n=14A281672