4-parking triangle T(r, i, 4) read by rows: T(r, i, k) = (r + 1)^(i-1)*binomial(k*(r + 1) + r - i - 1, r - i) with k = 4 and 0 <= i <= r.
A329060
4-parking triangle T(r, i, 4) read by rows: T(r, i, k) = (r + 1)^(i-1)*binomial(k*(r + 1) + r - i - 1, r - i) with k = 4 and 0 <= i <= r.
Terms
- a(0) =1a(1) =4a(2) =1a(3) =26a(4) =12a(5) =3a(6) =204a(7) =136a(8) =64a(9) =16a(10) =1771a(11) =1540a(12) =1050a(13) =500a(14) =125a(15) =16380a(16) =17550a(17) =15600a(18) =10800a(19) =5184a(20) =1296a(21) =158224a(22) =201376a(23) =220255a(24) =198940a(25) =139258a(26) =67228a(27) =16807a(28) =1577532a(29) =2324784
External references
- oeis: A329060