Number of length n words on {1,2,3} with no more than one consecutive 1 and no more than two consecutive 2's and no more than three consecutive 3's.
A242452
Number of length n words on {1,2,3} with no more than one consecutive 1 and no more than two consecutive 2's and no more than three consecutive 3's.
Terms
- a(0) =1a(1) =3a(2) =8a(3) =21a(4) =54a(5) =140a(6) =362a(7) =937a(8) =2425a(9) =6275a(10) =16239a(11) =42024a(12) =108751a(13) =281430a(14) =728295a(15) =1884709a(16) =4877320a(17) =12621710a(18) =32662931a(19) =84526348a(20) =218740428a(21) =566064618a(22) =1464883079a(23) =3790878933a(24) =9810177543a(25) =25387142435a(26) =65697791726a(27) =170015189725a(28) =439971633412
External references
- oeis: A242452