180670

Appears in sequences

• a(n) is the number of c-nets with n+1 vertices and 2n edges, n >= 1.at n=8A001506
• Number of nonsquare rectangles on an n X n board.at n=28A052149
• Triangle read by rows: T(n,k) is the number of c-nets with n+1 faces and k+1 vertices, 1 <= k <= n. But see A290326 for a better version.at n=44A210252
• Number of nX3 0..1 arrays with row sums unimodal and column sums inverted unimodal.at n=6A223778
• T(n,k) = Number of n X k 0..1 arrays with row sums unimodal and column sums inverted unimodal.at n=38A223782
• T(n,k) = Number of n X k 0..1 arrays with row sums unimodal and column sums inverted unimodal.at n=42A223782
• Triangle read by rows: T(n,k) is the number of c-nets with n+1 faces and k+1 vertices.at n=59A290326