Number of 0..4 arrays x(0..n-1) of n elements with each no smaller than the sum of its two previous neighbors modulo 5.

A207096

Number of 0..4 arrays x(0..n-1) of n elements with each no smaller than the sum of its two previous neighbors modulo 5.

Terms

    a(0) =5a(1) =15a(2) =45a(3) =140a(4) =441a(5) =1382a(6) =4322a(7) =13511a(8) =42238a(9) =132051a(10) =412840a(11) =1290698a(12) =4035218a(13) =12615643a(14) =39441343a(15) =123308779a(16) =385510576a(17) =1205254047a(18) =3768086810a(19) =11780485818a(20) =36830320820a(21) =115145720853a(22) =359989724116

External references