282003

Appears in sequences

• a(n) is the number of integer strings s(0),...,s(n) counted by array T in A026386 that have s(n)=2; also a(n) = T(2n,n-1).at n=8A026388
• a(n) = Sum_{k=0..n-1} T(n,k) * T(n,k+1), with T given by A026374.at n=8A026947
• a(n) = Sum_{k=0..n-1} T(n,k) * T(n,k+1), with T given by A026386.at n=8A026952
• Sum over all partitions of n of the product of the number of parts and the number of distinct parts.at n=31A339011