

A079280


Number of logconcave paths of length n starting from the origin (0,0) with steps from {N=(0,1), E=(1,0) and S=(0,1)} that stay in the second octant and never touch the line y=x except possibly at the beginning or the end.


0



1, 2, 2, 5, 7, 17, 26, 62, 99, 233, 382, 890, 1486, 3434, 5812, 13340, 22819, 52073, 89846, 204002, 354522, 801422, 1401292, 3155300, 5546382, 12444842, 21977516, 49155332, 87167164, 194392628, 345994216, 769547192, 1374282019, 3049104233
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