Number of 0..n arrays x(0..3) of 4 elements with each no smaller than the sum of its two previous neighbors modulo (n+1).

A207101

Number of 0..n arrays x(0..3) of 4 elements with each no smaller than the sum of its two previous neighbors modulo (n+1).

Terms

    a(0) =8a(1) =26a(2) =68a(3) =140a(4) =274a(5) =462a(6) =760a(7) =1158a(8) =1720a(9) =2431a(10) =3392a(11) =4550a(12) =6048a(13) =7825a(14) =10032a(15) =12597a(16) =15726a(17) =19285a(18) =23540a(19) =28343a(20) =33968a(21) =40250a(22) =47536a(23) =55575a(24) =64792a(25) =74916a(26) =86380a(27) =98890a(28) =112970a(29) =128216

External references