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Search: id:A151445
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| A151445 |
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Number of walks within N^2 (the first quadrant of Z^2) starting at (0,0), ending on the vertical axis and consisting of n steps taken from {(-1, -1), (0, 1), (1, -1), (1, 0), (1, 1)} |
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+0
1
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| 1, 1, 2, 6, 16, 49, 165, 538, 1881, 6673, 23954, 87931, 326739, 1224662, 4649697, 17778696, 68513483, 265907818, 1038089219, 4074688736, 16076107171, 63703583554, 253492204031, 1012528480799, 4058431546038, 16319598817463, 65820404923113, 266202737052052, 1079421216584541, 4387508855164279
(list; graph; listen)
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