Number of 3 X n 0..3 arrays with diagonals and antidiagonals unimodal and rows nondecreasing.

A224392

Number of 3 X n 0..3 arrays with diagonals and antidiagonals unimodal and rows nondecreasing.

Terms

    a(0) =64a(1) =1000a(2) =6094a(3) =27790a(4) =102232a(5) =319769a(6) =881519a(7) =2196522a(8) =5038720a(9) =10788462a(10) =21789398a(11) =41858498a(12) =76994510a(13) =136338455a(14) =233448747a(15) =387963222a(16) =627730762a(17) =991506308a(18) =1532314870a(19) =2321602662a(20) =3454306716a(21) =5054988261a(22) =7285189791

External references