Number of septenary sequences of length n such that no two consecutive terms have distance 3.
A287810
Number of septenary sequences of length n such that no two consecutive terms have distance 3.
Terms
- a(0) =1a(1) =7a(2) =41a(3) =241a(4) =1417a(5) =8333a(6) =49005a(7) =288193a(8) =1694833a(9) =9967141a(10) =58615749a(11) =344713305a(12) =2027224169a(13) =11921900829a(14) =70111496093a(15) =412318635697
External references
- oeis: A287810