Triangular array, inverse of 2*P - I, where P is Pascal's triangle and I is the identity matrix.

Terms

a(0) =1a(1) =-2a(2) =1a(3) =6a(4) =-4a(5) =1a(6) =-26a(7) =18a(8) =-6a(9) =1a(10) =150a(11) =-104a(12) =36a(13) =-8a(14) =1a(15) =-1082a(16) =750a(17) =-260a(18) =60a(19) =-10a(20) =1a(21) =9366a(22) =-6492a(23) =2250a(24) =-520a(25) =90a(26) =-12a(27) =1a(28) =-94586a(29) =65562