23218

Appears in sequences

• Coordination sequence for MgCu2, Mg position.at n=38A009931
• Triangle read by rows: T(n,k) is the number of skew Dyck paths of semilength n and having k UUU's (triplerises) (n >= 0; 0 <= k <= n-2 for n >= 2).at n=39A128719
• Numbers n for which A222085(n)=A222085(n+1).at n=24A222088
• Numbers n such that the decimal digits of n-phi(n) are a permutation of those of n.at n=41A273799
• Number of n X 3 0..1 arrays with the number of 1's horizontally or antidiagonally adjacent to some 0 equal to the number of 0's adjacent to some 1, with top left element zero.at n=5A284217
• T(n,k) = Number of n X k 0..1 arrays with the number of 1's horizontally or antidiagonally adjacent to some 0 equal to the number of 0's adjacent to some 1, with top left element zero.at n=33A284222
• Number of 6 X n 0..1 arrays with the number of 1's horizontally or antidiagonally adjacent to some 0 equal to the number of 0's adjacent to some 1, with top left element zero.at n=2A284227
• Products of four distinct primes between sphenic numbers (products of 3 distinct primes).at n=14A351382
• Radicands of pure cubic number fields of type BETA and subtype M0.at n=26A363699
• Number of unlabeled simple graphs covering n vertices such that it is possible to choose a different vertex from each edge (choosable).at n=13A368834
• Squarefree numbers k such that k^2 is abundant, and d^2 is nonabundant for any proper divisor d of k.at n=42A381741