Triangle read by rows: T(n,k) is the number of occurrences of the periodic substring (0011)^k in the periodic string (000111)^n.
A373628
Triangle read by rows: T(n,k) is the number of occurrences of the periodic substring (0011)^k in the periodic string (000111)^n.
Terms
- a(0) =1a(1) =1a(2) =9a(3) =1a(4) =81a(5) =81a(6) =1a(7) =351a(8) =1377a(9) =729a(10) =1a(11) =1035a(12) =11421a(13) =18225a(14) =6561a(15) =1a(16) =2430a(17) =62613a(18) =223803a(19) =216513a(20) =59049a(21) =1a(22) =4914a(23) =259119a(24) =1813023a(25) =3523257a(26) =2421009a(27) =531441a(28) =1a(29) =8946
External references
- oeis: A373628