19277

Appears in sequences

• Semiprimes (p+4) associated with last prime in A137626.at n=7A137628
• Numbers n such that phi(n)=2*phi(n-1).at n=21A171271
• a(n) = n*(14*n + 3).at n=37A195025
• Number of partitions p of n such that the number of parts having multiplicity 1 is not a part and max(p) - min(p) is not a part.at n=43A241450
• Solution of the complementary equation a(n) = a(n-1) + 2*a(n-2) + b(n-2), where a(0) = 1, a(1) = 2, b(0) = 3, b(1) = 4, and (a(n)) and (b(n)) are increasing complementary sequences.at n=13A295145
• Number of n X 3 0..1 arrays with no 1 adjacent to 2 king-move neighboring 1's.at n=5A297080
• Number of nX6 0..1 arrays with no 1 adjacent to 2 king-move neighboring 1s.at n=2A297083
• T(n,k)=Number of nXk 0..1 arrays with no 1 adjacent to 2 king-move neighboring 1s.at n=30A297085
• T(n,k)=Number of nXk 0..1 arrays with no 1 adjacent to 2 king-move neighboring 1s.at n=33A297085