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Search: id:A108444
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| A108444 |
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Number of triple descents (i.e. ddd's) in all paths from (0,0) to (3n,0) that stay in the first quadrant (but may touch the horizontal axis), consisting of steps u=(2,1),U=(1,2), or d=(1,-1). |
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| 5, 73, 857, 9505, 103341, 1114969, 11996209, 128989249, 1387480981, 14937170089, 160978217225, 1736820843233, 18760031574077, 202856430706617, 2195832009812065, 23792481053343361, 258038743598973477
(list; graph; listen)
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