Number of 6Xn 0..2 arrays with diagonals and antidiagonals unimodal and rows nondecreasing.
A224357
Number of 6Xn 0..2 arrays with diagonals and antidiagonals unimodal and rows nondecreasing.
Terms
- a(0) =729a(1) =46656a(2) =349280a(3) =1351748a(4) =4231138a(5) =12340932a(6) =34697869a(7) =94262290a(8) =246254814a(9) =616242552a(10) =1475123504a(11) =3379586703a(12) =7423803582a(13) =15672970622a(14) =31884279651a(15) =62668814332a(16) =119312143790a(17) =220555944774a(18) =396752366132a(19) =695942226325
External references
- oeis: A224357