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A323973
Number of 9 X n integer matrices (m_{i,j}) such that m_{1,1}=0, m_{9,n}=2, and all rows, columns, and falling diagonals are (weakly) monotonic without jumps of 2.
2
1, 28, 406, 4631, 38304, 249814, 1357051, 6362806, 26400811, 98755951, 337852708, 1069253171, 3159851197, 8786784471, 23140533785, 58032604728, 139238130793, 320911139366, 712976624945, 1531659348507, 3190199728577, 6457722870812, 12731177730290, 24491108899982
OFFSET
0,2
LINKS
CROSSREFS
Row (or column) 9 of array in A323846.
Sequence in context: A162727 A010980 A022592 * A121798 A238600 A278009
KEYWORD
nonn,easy
AUTHOR
Alois P. Heinz, Feb 09 2019
STATUS
approved