Number of Catalan paths (nonnegative, starting and ending at 0, step +/-1) of 2*n steps with all values <= 5.

A080937

Number of Catalan paths (nonnegative, starting and ending at 0, step +/-1) of 2*n steps with all values <= 5.

Terms

    a(0) =1a(1) =1a(2) =2a(3) =5a(4) =14a(5) =42a(6) =131a(7) =417a(8) =1341a(9) =4334a(10) =14041a(11) =45542a(12) =147798a(13) =479779a(14) =1557649a(15) =5057369a(16) =16420730a(17) =53317085a(18) =173118414a(19) =562110290a(20) =1825158051a(21) =5926246929a(22) =19242396629a(23) =62479659622a(24) =202870165265a(25) =658715265222

External references