Number of length-(n+1) 0..6 arrays with new values introduced in sequential order, and with new repeated values introduced in sequential order, both starting with zero.
A268325
Number of length-(n+1) 0..6 arrays with new values introduced in sequential order, and with new repeated values introduced in sequential order, both starting with zero.
Terms
- a(0) =2a(1) =4a(2) =11a(3) =33a(4) =114a(5) =435a(6) =1828a(7) =8347a(8) =40967a(9) =213476a(10) =1167038a(11) =6620563a(12) =38616800a(13) =229908144a(14) =1389394409a(15) =8488437842a(16) =52275301038a(17) =323844494931
External references
- oeis: A268325