Number of length n+3 0..2 arrays with no four consecutive terms having the sum of any three elements equal to three times the fourth.
A249284
Number of length n+3 0..2 arrays with no four consecutive terms having the sum of any three elements equal to three times the fourth.
Terms
- a(0) =66a(1) =168a(2) =428a(3) =1094a(4) =2792a(5) =7132a(6) =18232a(7) =46616a(8) =119176a(9) =304696a(10) =779066a(11) =1992002a(12) =5093330a(13) =13023126a(14) =33299000a(15) =85142802a(16) =217703012a(17) =556648464a(18) =1423304428a(19) =3639273226a(20) =9305324178a(21) =23792953554a(22) =60836640416a(23) =155554327024a(24) =397739724496
External references
- oeis: A249284