18855

Appears in sequences

• T(n, 2*n-5), T given by A027960.at n=16A027967
• Number of optimal binary prefix-free codes with n words all ending in 1.at n=43A055167
• Numbers n such that x^n + x^11 + 1 is irreducible over GF(2).at n=33A057481
• Number of labeled connected 3-chromatic (i.e., chromatic number = 3) graphs on n nodes.at n=5A084273
• Numbers of the form 86+p^2 (where p is a prime).at n=32A138692
• Sigma(n)-n values in A085844.at n=18A216383
• Number of partitions of n such that the number of parts having multiplicity 1 is not a part and the number of distinct parts is not a part.at n=45A241445
• Number of nX4 0..1 arrays with every element unequal to 0, 1, 2, 4 or 5 king-move adjacent elements, with upper left element zero.at n=6A304343
• Number of n X 7 0..1 arrays with every element unequal to 0, 1, 2, 4 or 5 king-move adjacent elements, with upper left element zero.at n=3A304346
• T(n,k)=Number of nXk 0..1 arrays with every element unequal to 0, 1, 2, 4 or 5 king-move adjacent elements, with upper left element zero.at n=48A304347
• T(n,k)=Number of nXk 0..1 arrays with every element unequal to 0, 1, 2, 4 or 5 king-move adjacent elements, with upper left element zero.at n=51A304347
• Square array T(n,k), n >= 0, k >= 0, read by antidiagonals, where column k is the expansion of 1/(1 - 2*k*x + ((k-2)*x)^2)^(3/2).at n=49A331514
• Expansion of 1/(1 - 10*x + 9*x^2)^(3/2).at n=4A331516
• Number of ways to write n as an ordered sum of 5 prime powers (including 1).at n=38A341134