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Search: id:A149854
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| A149854 |
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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, -1), (-1, -1, 1), (0, 1, 0), (1, 1, 0)} |
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+0
1
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| 1, 2, 5, 13, 37, 111, 346, 1100, 3557, 11683, 38926, 131154, 445765, 1526305, 5261985, 18254431, 63672445, 223138635, 785267758, 2774187398, 9835528373, 34983477901, 124795716145, 446376963933, 1600610895841, 5752771831361, 20720666878796, 74782199279800, 270397125942817, 979410568546113, 3553373294757136
(list; graph; listen)
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