Number of nonnegative integer arrays of length n+13 with new values 0 upwards introduced in order, no three adjacent elements all unequal, and containing the value 7.
A211847
Number of nonnegative integer arrays of length n+13 with new values 0 upwards introduced in order, no three adjacent elements all unequal, and containing the value 7.
Terms
- a(0) =1a(1) =15a(2) =149a(3) =1173a(4) =7996a(5) =49210a(6) =280751a(7) =1510267a(8) =7752966a(9) =38313584a(10) =183476493a(11) =855810005a(12) =3904023943a(13) =17474944971a(14) =76959615336a(15) =334220597220
External references
- oeis: A211847