Number of 0..3 arrays x(0..n-1) of n elements with each no smaller than the sum of its four previous neighbors modulo 4.
A200464
Number of 0..3 arrays x(0..n-1) of n elements with each no smaller than the sum of its four previous neighbors modulo 4.
Terms
- a(0) =4a(1) =10a(2) =26a(3) =69a(4) =181a(5) =455a(6) =1120a(7) =2794a(8) =6955a(9) =17254a(10) =42770a(11) =105825a(12) =262026a(13) =648672a(14) =1605786a(15) =3974375a(16) =9835789a(17) =24343416a(18) =60250311a(19) =149117782a(20) =369056036a(21) =913396093a(22) =2260628044a(23) =5594995167a(24) =13847440350a(25) =34272006253a(26) =84822308047a(27) =209933077581
External references
- oeis: A200464