57519

Appears in sequences

• Repeated terms in A087657 (a(n) = |prime(n)-a(n-1)| + |prime(n)-a(n-2)| + |prime(n)-a(n-3)| ).at n=15A087658
• a(n) = 1 if n=0, otherwise Sum_{k=0..floor((n-1)/2)} binomial(n-k-1, k) *(-1)^k*a(n-1-2k).at n=20A172385
• Half the number of n X 3 binary arrays with the number of 1-1 adjacencies equal to the number of 0-0 adjacencies.at n=6A183249
• T(n,k)=Half the number of nXk binary arrays with the number of 1-1 adjacencies equal to the number of 0-0 adjacencies.at n=38A183253
• T(n,k)=Half the number of nXk binary arrays with the number of 1-1 adjacencies equal to the number of 0-0 adjacencies.at n=42A183253