Number of 7-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.
A213286
Number of 7-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) =46a(3) =367a(4) =1805a(5) =7280a(6) =25781a(7) =83916a(8) =250062a(9) =676155a(10) =1662160a(11) =3748261a(12) =7839811a(13) =15370082a(14) =28505855a(15) =50400890a(16) =85502316a(17) =139914981a(18) =221828802a(19) =342014155a(20) =514390345a(21) =756672196a(22) =1091099801a(23) =1545256472a(24) =2152979930a(25) =2955371775a(26) =4001910276a(27) =5351671521
External references
- oeis: A213286