Number of strictly increasing arrangements of n nonzero numbers in -(2n-2)..(2n-2) with sum zero.

A188113

Number of strictly increasing arrangements of n nonzero numbers in -(2n-2)..(2n-2) with sum zero.

Terms

    a(0) =0a(1) =2a(2) =4a(3) =31a(4) =172a(5) =1154a(6) =8044a(7) =58595a(8) =439514a(9) =3379972a(10) =26513202a(11) =211413199a(12) =1709183316a(13) =13981482114a(14) =115537553904a(15) =963234521237

External references