Number of length 5+3 0..n arrays with every four consecutive terms having the sum of some three elements equal to three times the fourth.

A248542

Number of length 5+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) =149a(4) =462a(5) =907a(6) =2000a(7) =3827a(8) =6566a(9) =9607a(10) =13716a(11) =19361a(12) =26626a(13) =35005a(14) =45144a(15) =57553a(16) =72370a(17) =89055a(18) =108244a(19) =130139a(20) =155466a(21) =183111a(22) =214128a(23) =250561a(24) =289902a(25) =332521a(26) =379740a(27) =431741a(28) =487886a(29) =547037

External references