55531

Appears in sequences

• McKay-Thompson series of class 27b for the Monster group.at n=38A058601
• a(1) = 2, thereafter a(n) = Sum_{k=1..n-1} floor(a(n-k)/k).at n=25A100483
• Number of ways to place zero or more nonadjacent 1,0 1,1 2,0 2,1 3,0 4,0 polyhexes in any orientation on a planar nXnXn triangular grid.at n=6A155252
• Number of sets of exactly n positive integers <= n+6 having a square element sum.at n=32A281969
• 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 782", based on the 5-celled von Neumann neighborhood.at n=15A284027