Number of nondecreasing sequences of n 1..n+1 integers with no element dividing the sequence sum.

A212869

Number of nondecreasing sequences of n 1..n+1 integers with no element dividing the sequence sum.

Terms

    a(0) =0a(1) =1a(2) =3a(3) =15a(4) =52a(5) =199a(6) =722a(7) =2693a(8) =10052a(9) =37344a(10) =141943a(11) =528323a(12) =2020746a(13) =7720299a(14) =29535575a(15) =112041465a(16) =434810382a(17) =1666519344a(18) =6447232492a(19) =24895996003a(20) =96654652273

External references