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Search: id:A151284
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| A151284 |
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Number of walks within N^2 (the first quadrant of Z^2) starting at (0,0) and consisting of n steps taken from {(-1, 1), (0, 1), (1, -1), (1, 0)} |
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+0
1
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| 1, 2, 6, 20, 70, 254, 942, 3550, 13532, 52030, 201386, 783560, 3061442, 12001804, 47181278, 185904220, 733908634, 2901998092, 11490757796, 45552262860, 180762964146, 717939220774, 2853611232902, 11349816190552, 45168339253888, 179845805435900, 716409551285034, 2854926106932244
(list; graph; listen)
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