Number of length 5+2 0..n arrays with no pair in any consecutive three terms totalling exactly n.

A246000

Number of length 5+2 0..n arrays with no pair in any consecutive three terms totalling exactly n.

Terms

    a(0) =2a(1) =38a(2) =956a(3) =7132a(4) =40590a(5) =153906a(6) =496088a(7) =1319480a(8) =3178490a(9) =6857470a(10) =13855572a(11) =26075028a(12) =46848326a(13) =80108042a(14) =132346160a(15) =210837616a(16) =327085938a(17) =493492950a(18) =729039980a(19) =1053585740a(20) =1496758142a(21) =2088821218a(22) =2874009096a(23) =3896630952

External references