89089

Appears in sequences

• Number of trees of diameter 4.at n=45A000094
• Expansion of 1/((1-4x)(1-9x)(1-12x)).at n=4A019722
• Triangle read by rows: numbers of isomers of unbranched a-4-catapolydecagons.at n=38A120651
• Numbers of isomers of unbranched a-4-catapolydecagons - see Brunvoll reference for precise definition.at n=6A121144
• Start of a triple of consecutive squarefree numbers each of which has exactly 4 distinct prime factors.at n=11A242607
• Numbers with easy multiplication table - the first 9 multiples of these numbers can be derived by either incrementing or decrementing the corresponding digits from the previous multiple.at n=35A359925
• a(n) is the denominator of the probability that the free polyomino with binary code A246521(n+1) appears as the image of a simple random walk on the square lattice.at n=21A367995
• a(n) is the denominator of the probability that the free polyomino with binary code A246521(n+1) appears as the image of a simple random walk on the square lattice.at n=33A367995
• a(n) is the denominator of the probability that a particular one of the A335573(n+1) fixed polyominoes corresponding to the free polyomino with binary code A246521(n+1) appears as the image of a simple random walk on the square lattice.at n=21A368001
• a(n) is the denominator of the probability that a particular one of the A335573(n+1) fixed polyominoes corresponding to the free polyomino with binary code A246521(n+1) appears as the image of a simple random walk on the square lattice.at n=33A368001