T(n,k)=Number of nonnegative integer arrays of length n+2k+1 with new values 0 upwards introduced in order, no three adjacent elements all unequal, and containing the value k+1.
A211849
T(n,k)=Number of nonnegative integer arrays of length n+2k+1 with new values 0 upwards introduced in order, no three adjacent elements all unequal, and containing the value k+1.
Terms
- a(0) =1a(1) =1a(2) =5a(3) =1a(4) =7a(5) =19a(6) =1a(7) =9a(8) =35a(9) =63a(10) =1a(11) =11a(12) =56a(13) =147a(14) =196a(15) =1a(16) =13a(17) =82a(18) =286a(19) =561a(20) =588a(21) =1a(22) =15a(23) =113a(24) =494a(25) =1302a(26) =2013a(27) =1731a(28) =1a(29) =17
External references
- oeis: A211849