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A177319
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Number of permutations of n copies of 1..7 with all adjacent differences <= 1 in absolute value.
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2
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1, 2, 148, 41618, 16699380, 8039989002, 4339892975512, 2535604038015218, 1570273521448103668, 1016915629343040544250, 682308706348352869913148, 471167961102713571612302730, 333217453890900855796193690520, 240438319207137787818120695999370
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OFFSET
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0,2
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LINKS
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CROSSREFS
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KEYWORD
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nonn
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AUTHOR
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EXTENSIONS
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STATUS
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approved
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