45630

Appears in sequences

• Expansion of (1+x^3*C^2)*C^3, where C = (1-(1-4*x)^(1/2))/(2*x) is g.f. for Catalan numbers, A000108.at n=9A071732
• Numbers n such that n^2 is divisible by the sum of the distinct prime divisors of n^2 + 1.at n=26A196219
• Number of n X 3 arrays of the minimum value of corresponding elements and their horizontal, vertical or antidiagonal neighbors in a random, but sorted with lexicographically nondecreasing rows and columns, 0..1 n X 3 array.at n=31A219699
• a(n) = 30*n^2.at n=39A244636
• Positions of records in A166133.at n=43A256404
• Numbers n such that A166133(n) sets a new record and also satisfies A166133(n)=A166133(n-1)^2-1.at n=28A256422
• Numbers n such that n^2 + 1 has two distinct prime divisors less than n.at n=32A263876
• Partial sums of the number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 289", based on the 5-celled von Neumann neighborhood.at n=42A271127
• Numbers m such that sigma(sigma(m))/m is a square.at n=28A318084
• Viggo Brun's ternary continued fraction algorithm applied to { log 2, log 3/2, log 5/4 } produces a list of triples (p,q,r); sequence gives q values.at n=30A359743
• Number of labeled loop-graphs covering a subset of {1..n} such that it is possible to choose a different vertex from each edge.at n=6A368927