Number of 0..6 arrays x(0..n-1) of n elements with each no smaller than the sum of its three previous neighbors modulo 7.

A200666

Number of 0..6 arrays x(0..n-1) of n elements with each no smaller than the sum of its three previous neighbors modulo 7.

Terms

    a(0) =7a(1) =28a(2) =112a(3) =448a(4) =1813a(5) =7322a(6) =29536a(7) =119066a(8) =479993a(9) =1935168a(10) =7802161a(11) =31456852a(12) =126827111a(13) =511338342a(14) =2061602939a(15) =8311924900a(16) =33511832745a(17) =135112262286a(18) =544742594039

External references