Number of nondecreasing arrangements of n+3 numbers in 0..6 with each number being the sum mod 7 of three others.

A183901

Number of nondecreasing arrangements of n+3 numbers in 0..6 with each number being the sum mod 7 of three others.

Terms

    a(0) =1a(1) =1a(2) =136a(3) =664a(4) =1720a(5) =3491a(6) =6263a(7) =10400a(8) =16357a(9) =24694a(10) =36091a(11) =51364a(12) =71482a(13) =97585a(14) =131003a(15) =173276a(16) =226175a(17) =291724a(18) =372223a(19) =470272a(20) =588796a(21) =731071a(22) =900751a(23) =1101896a(24) =1339001a(25) =1617026a(26) =1941427a(27) =2318188a(28) =2753854a(29) =3255565

External references