Number of nondecreasing arrangements of n+3 numbers in 0..8 with each number being the sum mod 9 of three others.

A183903

Number of nondecreasing arrangements of n+3 numbers in 0..8 with each number being the sum mod 9 of three others.

Terms

    a(0) =1a(1) =9a(2) =242a(3) =1866a(4) =6503a(5) =15973a(6) =33236a(7) =62678a(8) =110487a(9) =185231a(10) =298538a(11) =465912a(12) =707702a(13) =1050242a(14) =1527181a(15) =2181023a(16) =3064898a(17) =4244586a(18) =5800817a(19) =7831871a(20) =10456503

External references