18175
domain: N
Appears in sequences
- Number of degeneracies on the sets of N ordinary trees with p vertices.at n=9A121222
- A sequence of asymptotic density zeta(9) - 1, where zeta is the Riemann zeta function.at n=36A143035
- a(n) = 12*n^2 + 22*n + 11.at n=38A154106
- Number of (n+2)X(3+2) 0..3 arrays with every 3X3 subblock row, column, diagonal and antidiagonal sum not equal to 0 3 5 6 or 8.at n=4A252468
- Number of (n+2)X(5+2) 0..3 arrays with every 3X3 subblock row, column, diagonal and antidiagonal sum not equal to 0 3 5 6 or 8.at n=2A252470
- T(n,k)=Number of (n+2)X(k+2) 0..3 arrays with every 3X3 subblock row, column, diagonal and antidiagonal sum not equal to 0 3 5 6 or 8.at n=23A252473
- T(n,k)=Number of (n+2)X(k+2) 0..3 arrays with every 3X3 subblock row, column, diagonal and antidiagonal sum not equal to 0 3 5 6 or 8.at n=25A252473
- Partial sums of the number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 305", based on the 5-celled von Neumann neighborhood.at n=29A271162
- Numbers n such that prime(n) contains a substring of all the prime digits in order, i.e., "2357".at n=4A295708
- Numbers m such that m^2+1 is semiprime with (m-1)^2+1 and (m+1)^2+1 primes.at n=35A321985
- Values taken by the function A067095 in the order of their appearance.at n=5A349960
- a(n) is the number of n-digit numbers whose difference between the largest and smallest digits is equal to 8.at n=4A367249
- Irregular triangle read by rows: T(n,k) is the number of partitions of the vertex set of the n-cocktailparty graph into k connected subsets, 1 <= k <= 2*n.at n=38A389985