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A323969
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Number of 5 X n integer matrices (m_{i,j}) such that m_{1,1}=0, m_{5,n}=2, and all rows, columns, and falling diagonals are (weakly) monotonic without jumps of 2.
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2
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1, 6, 41, 266, 1247, 4657, 14795, 41586, 106067, 249814, 550334, 1145148, 2268140, 4302757, 7857830, 13873160, 23763590, 39612078, 64424311, 102459670, 159655885, 244167521, 367041525, 543056454, 791755709, 1138709134, 1617041716, 2269272856, 3149514786
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OFFSET
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0,2
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LINKS
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FORMULA
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G.f.: -(3*x^11 -29*x^10 +125*x^9 -314*x^8 +501*x^7 -517*x^6 +323*x^5 -84*x^4 -20*x^3 +30*x^2 -5*x+1) / (x-1)^11.
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CROSSREFS
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Row (or column) 5 of array in A323846.
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KEYWORD
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nonn,easy
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AUTHOR
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STATUS
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approved
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