Number of length 4+3 0..n arrays with every four consecutive terms having the sum of some three elements equal to three times the fourth.

A248541

Number of length 4+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) =137a(4) =378a(5) =715a(6) =1412a(7) =2535a(8) =4142a(9) =5939a(10) =8300a(11) =11457a(12) =15402a(13) =19957a(14) =25368a(15) =31937a(16) =39658a(17) =48283a(18) =58104a(19) =69315a(20) =82022a(21) =95815a(22) =111160a(23) =129001a(24) =148166a(25) =168873a(26) =191572a(27) =216629a(28) =243618a(29) =272009

External references