140112

Appears in sequences

• Consider numbers n = concat(w,x,y,z) such that w*x*y*z | n. Leading zeros in x, y and z allowed. Sequence lists numbers that admit at least two such concatenations.at n=25A257172
• Triangle read by rows: T(n,k) = Sum_{i=0..n/2} C(n-i,i)*C(n-i,k-i)*C(n-1,i) (0 <= k <= n).at n=60A306226
• G.f. satisfies A(x) = (1 + x) * (1 - x*A(x)^2).at n=19A364371