22120

Appears in sequences

• Powers of rooted tree enumerator.at n=13A000529
• Triangle read by rows: T(n,k) = number of permutations of length n with exactly k rising or falling successions, for n >= 1, 0 <= k <= n-1.at n=40A001100
• Theta series of A_7 lattice.at n=10A008447
• Numbers that are divisible by 10 and are differences between two cubes in at least one way.at n=29A038854
• Multiples of 7 whose sum of digits is equal to 7.at n=35A063416
• Antidiagonal sums of table A083044.at n=17A083046
• Number of permutations of length n with exactly 4 rising or falling successions.at n=9A086855
• Maximum value taken on by f(P) = Sum_{i=1..n} p(i)*p(n+1-i) as {p(1),p(2),...,p(n)} ranges over all permutations P of {1,2,3,...,n}.at n=40A087035
• Limit of unsigned reversed rows of triangle A144006.at n=11A144007
• Number of 4-step one or two space at a time bishop's tours on an n X n board summed over all starting positions.at n=10A187048
• 7 times hexagonal numbers: a(n) = 7*n*(2*n-1).at n=40A195320
• Triangle read by rows. T(n, k) = coefficient of x^n in the Taylor expansion of [((1 - x - 2*x^2 - sqrt(1 - 2*x - 3*x^2))/(2*x^2))]^k.at n=58A202710
• Number of partitions of n into 8 parts such that every i-th smallest part (counted with multiplicity) is different from i.at n=26A244244
• Number of length 4 1..(n+2) arrays with no leading or trailing partial sum equal to a prime and no consecutive values equal.at n=20A254221
• Number of partitions of n having no odd singletons (n>=0).at n=47A265256
• 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 291", based on the 5-celled von Neumann neighborhood.at n=32A280567
• Edge count of the n X n white bishop graph.at n=40A289179
• Number of permutations of [n] with exactly floor(n/2) rising or falling successions.at n=9A322294
• Number of permutations of [2n+1] with exactly n rising or falling successions.at n=4A322296
• Numbers that cannot be expressed as the sum of one or more numbers without any repeated digits.at n=8A342080