Number of 5-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.
A213284
Number of 5-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) =14a(3) =74a(4) =276a(5) =895a(6) =2506a(7) =6104a(8) =13224a(9) =26061a(10) =47590a(11) =81686a(12) =133244a(13) =208299a(14) =314146a(15) =459460a(16) =654416a(17) =910809a(18) =1242174a(19) =1663906a(20) =2193380a(21) =2850071a(22) =3655674a(23) =4634224a(24) =5812216a(25) =7218725a(26) =8885526a(27) =10847214a(28) =13141324a(29) =15808451
External references
- oeis: A213284