131717

Appears in sequences

• Concatenate consecutive prime-sided isosceles triangles.at n=5A097446
• Array read by diagonals downwards: A(n,k) for n>=2 and k>=0 is the number of (n,k)-polyominoes.at n=59A381030
• Number of integer partitions of n such that it is not possible to choose a different constant integer partition of each part.at n=48A387329