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A306372
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Number of n X n integer matrices (m_{i,j}) such that m_{1,1}=1, m_{n,n}=n, and all rows and columns are (weakly) monotonic without jumps larger than 1.
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2
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1, 4, 44, 1236, 84910, 14024408, 5530983756, 5192169001644, 11583105980431652, 61353264333274642456, 771168645274178148758934, 22993716372161876140519972488, 1625987621134180524757435478838056, 272649922373702777601949547955204462396, 108399145705124270227889424469312592196654704
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OFFSET
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1,2
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LINKS
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FORMULA
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CROSSREFS
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KEYWORD
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nonn
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AUTHOR
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STATUS
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approved
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