Number of length n+7 0..3 arrays with at most one downstep in every 7 consecutive neighbor pairs.
A258729
Number of length n+7 0..3 arrays with at most one downstep in every 7 consecutive neighbor pairs.
Terms
- a(0) =5115a(1) =10280a(2) =22866a(3) =55660a(4) =138196a(5) =331584a(6) =752180a(7) =1607656a(8) =3343894a(9) =7100132a(10) =15867680a(11) =37057120a(12) =87647408a(13) =203774064a(14) =457583316a(15) =996246248a(16) =2145967651a(17) =4684383672a(18) =10501666108a(19) =24080284440a(20) =55579151729a(21) =126886388888
External references
- oeis: A258729