Number of length n+4 0..3 arrays with no pair in any consecutive five terms totalling exactly 3.

A246732

Number of length n+4 0..3 arrays with no pair in any consecutive five terms totalling exactly 3.

Terms

    a(0) =124a(1) =260a(2) =548a(3) =1156a(4) =2436a(5) =5132a(6) =10812a(7) =22780a(8) =47996a(9) =101124a(10) =213060a(11) =448900a(12) =945796a(13) =1992716a(14) =4198492a(15) =8845884a(16) =18637564a(17) =39267844a(18) =82734180a(19) =174314244a(20) =367266052a(21) =773799948a(22) =1630334076a(23) =3434982396a(24) =7237230844a(25) =15248261636

External references