261864

Appears in sequences

• Number of binary strings of length n with equal numbers of 001 and 110 substrings.at n=20A164145
• Let G denote the 7-node, 12-edge graph formed from a hexagon with main diagonals drawn and a node at the center; a(n) = number of magic labelings of G with magic sum 2n.at n=14A244866