Number of nX3 0..2 arrays with rows and columns lexicographically nondecreasing and the instance counts of every value within one of each other.

A201427

Number of nX3 0..2 arrays with rows and columns lexicographically nondecreasing and the instance counts of every value within one of each other.

Terms

    a(0) =1a(1) =13a(2) =99a(3) =622a(4) =3406a(5) =16399a(6) =70192a(7) =272801a(8) =974066a(9) =3232454a(10) =10054552a(11) =29532523a(12) =82397798a(13) =219500791a(14) =560691234a(15) =1378470505a(16) =3272266551a(17) =7521401992a(18) =16780966687a(19) =36420942317a(20) =77044661996a(21) =159126985181a(22) =321388308477

External references