324576

Appears in sequences

• Coordination sequence for hyperbolic tessellation 3^7 (from triangle group (2,3,7)).at n=12A001354
• Fibonacci sequence beginning 0, 7.at n=24A022090
• Triangle read by rows: T(n,k) = number of functions from [1,2,...,n] to [1,2,...,n] such that the image contains exactly k elements (0<=k<=n).at n=39A090657
• Third row of array in A101385.at n=17A101645
• Triangle read by rows: T(n,h) = number of functions f:{1,2,...,n}->{1,2,...,n} such that |Image(f)|=h; h=1,2,...,n, n=1,2,3,... . Essentially A090657, but without zeros.at n=30A101817
• Number of permutations of {1,...,n} avoiding adjacent step pattern up, down, down, down, up.at n=9A177525
• Sum of all parts of all partitions of n minus the number of partitions of n.at n=32A182724
• Number of (n+2)X3 binary arrays with 3X3 subblock sums nondecreasing rightwards and downwards.at n=4A186832
• Number of (n+2)X7 binary arrays with 3X3 subblock sums nondecreasing rightwards and downwards.at n=0A186836
• T(n,k)=Number of (n+2)X(k+2) binary arrays with 3X3 subblock sums nondecreasing rightwards and downwards.at n=10A186840
• T(n,k)=Number of (n+2)X(k+2) binary arrays with 3X3 subblock sums nondecreasing rightwards and downwards.at n=14A186840
• Triangular array read by rows: T(n,k) is the number of endofunctions, functions f:{1,2,...,n}->{1,2,...,n}, that have exactly k elements with no preimage; n>=0, 0<=k<=n.at n=41A219859
• Triangle read by rows. T(n, k) = FallingFactorial(n - k, k) * Stirling2(n - k, k), for n >= 0 and 0 <= k <= n//2, where '//' denotes integer division.at n=39A362789
• Triangle of numbers read by rows, T(n, k) = (n*(n-1)*(n-2))*Stirling2(k, 3), for n >= 1 and 1 <= k <= n.at n=35A362791