Triangle read by rows: T(n,k) is the number of 4-dimensional balanced ballot paths of 4n steps with exactly k peaks.

A387936

Triangle read by rows: T(n,k) is the number of 4-dimensional balanced ballot paths of 4n steps with exactly k peaks.

Terms

    a(0) =1a(1) =5a(2) =9a(3) =42a(4) =236a(5) =184a(6) =462a(7) =5354a(8) =12268a(9) =5940a(10) =6006a(11) =118914a(12) =543119a(13) =737129a(14) =257636a(15) =87516a(16) =2653224a(17) =20245479a(18) =53243052a(19) =50245691a(20) =13754842a(21) =1385670a(22) =59852584a(23) =688208251a(24) =2966624012a(25) =5299096714a(26) =3800159752a(27) =857078907a(28) =23371634a(29) =1366581018

External references