Number of 9-length words w over n-ary alphabet such that for every prefix z of w we have #(z,a_i) = 0 or #(z,a_i) >= #(z,a_j) for all j>i and #(z,a_i) counts the occurrences of the i-th letter in z.
A213288
Number of 9-length words w over n-ary alphabet such that for every prefix z of w we have #(z,a_i) = 0 or #(z,a_i) >= #(z,a_j) for all j>i and #(z,a_i) counts the occurrences of the i-th letter in z.
Terms
- a(0) =0a(1) =1a(2) =162a(3) =2074a(4) =13280a(5) =64924a(6) =273248a(7) =1050777a(8) =3754472a(9) =12602451a(10) =39598078a(11) =115470300a(12) =311272072a(13) =777274550a(14) =1808153452a(15) =3946185587a(16) =8137258032a(17) =15957939797a(18) =29935676058a(19) =53988338158a(20) =94013898576a(21) =158665898944a(22) =260355640952a(23) =416527654621a(24) =651260985944
External references
- oeis: A213288