58130

Appears in sequences

• Number of compositions of n such that no two adjacent parts are equal (these are sometimes called Carlitz compositions).at n=21A003242
• Retrograde trajectory of 11 under map n -> A132988(n).at n=45A132991
• Number of (n+1) X (n+1) -3..3 symmetric matrices with every 2 X 2 subblock having sum zero and two, three or four distinct values.at n=6A211328
• Number of nX3 0..3 arrays with no element equal to zero plus the sum of elements to its left or one plus the sum of elements above it or one plus the sum of the elements diagonally to its northwest or one plus the sum of the elements antidiagonally to its northeast, modulo 4.at n=11A239595
• Sequence gives the denominators, in increasing values, of Egyptian fractions such that their sum has the concatenation of these denominators as decimal part. Case a(1) = 3.at n=2A302932
• Triangle read by rows: T(n,k) is the number of 4-dimensional balanced ballot paths of 4n steps such that the height is exactly k, 3 <= k <= 3*n.at n=25A387987