450553

Appears in sequences

• Number of 3 X n 0..3 arrays with no element equal to one plus the sum of elements to its left or one plus the sum of the elements above it or zero 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=12A241437
• Number of integer compositions of n whose leaders of anti-runs are weakly increasing.at n=21A374681