129280

Appears in sequences

• Arises in enumerating Huffman codes, compact trees, and sums of unit fractions.at n=19A194631
• Number of 2 X n arrays of the minimum value of corresponding elements and their horizontal or diagonal neighbors in a random, but sorted with lexicographically nondecreasing rows and nonincreasing columns, 0..3 2 X n array.at n=18A219940
• G.f.: Sum_{n>=0} x^n / (1-x)^(n^4).at n=6A227934
• 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 369", based on the 5-celled von Neumann neighborhood.at n=16A281517