Number of length 7+3 0..n arrays with every four consecutive terms having the sum of some three elements equal to three times the fourth.

A248544

Number of length 7+3 0..n arrays with every four consecutive terms having the sum of some three elements equal to three times the fourth.

Terms

    a(0) =2a(1) =15a(2) =52a(3) =197a(4) =762a(5) =1635a(6) =4424a(7) =9681a(8) =18006a(9) =27031a(10) =39712a(11) =58889a(12) =84802a(13) =114305a(14) =150856a(15) =198147a(16) =256038a(17) =321105a(18) =396728a(19) =485607a(20) =591270a(21) =706739a(22) =836684a(23) =996031a(24) =1169410a(25) =1356535a(26) =1566720a(27) =1801223a(28) =2055290a(29) =2322411

External references