173472

Appears in sequences

• Triangle read by rows: T(n,k) is the number of deco polyominoes of height n having along the lower contour exactly k reentrant corners, i.e., a vertical step that is followed by a horizontal step (n>=1, k>=0).at n=21A121579
• The smallest pronic (A002378) that contains the digits of n in its exact middle.at n=34A163597
• Number of binary strings of length n with equal numbers of 0010 and 1100 substrings.at n=19A164172