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Search: id:A151415
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| A151415 |
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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, 0), (1, 1)} |
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+0
1
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| 1, 0, 2, 3, 10, 27, 89, 267, 868, 2858, 9510, 31830, 108638, 373219, 1288064, 4482534, 15710368, 55258931, 195240700, 693284513, 2470263132, 8827776270, 31654190580, 113835950410, 410335021648, 1482638356348, 5369592056146, 19484896375080, 70835100481126, 257981797359638, 941120763934455, 3438343699103345
(list; graph; listen)
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