870473

Appears in sequences

• Semiprimes p*q for which p and q are successive primes and their binary representations differ from each other in one bit position only.at n=43A261080
• Number of n X 4 0..2 arrays with rows in nondecreasing lexicographic order and columns in nonincreasing lexicographic order.at n=5A278803
• Number of nX6 0..2 arrays with rows in nondecreasing lexicographic order and columns in nonincreasing lexicographic order.at n=3A278805
• T(n,k)=Number of nXk 0..2 arrays with rows in nondecreasing lexicographic order and columns in nonincreasing lexicographic order.at n=39A278807
• T(n,k)=Number of nXk 0..2 arrays with rows in nondecreasing lexicographic order and columns in nonincreasing lexicographic order.at n=41A278807