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Search: id:A149031
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| A149031 |
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Number of walks within N^3 (the first octant of Z^3) starting at (0,0,0) and consisting of n steps taken from {(-1, -1, 0), (-1, 1, 0), (0, 1, -1), (1, -1, 0), (1, 0, 1)} |
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| 1, 1, 3, 10, 33, 127, 486, 1943, 8052, 33504, 143203, 618615, 2696818, 11919409, 52965105, 237386849, 1071312485, 4857376568, 22160738643, 101518175550, 467022106982, 2157328576831, 9996509638302, 46480743976377, 216739174880976, 1013326106030851, 4750067786683020, 22315803215975305
(list; graph; listen)
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