Triangle used for the integral of odd powers of the sine and cosine functions.

Terms

a(0) =-1a(1) =-9a(2) =1a(3) =-150a(4) =25a(5) =-3a(6) =-3675a(7) =735a(8) =-147a(9) =15a(10) =-119070a(11) =26460a(12) =-6804a(13) =1215a(14) =-105a(15) =-4802490a(16) =1143450a(17) =-343035a(18) =81675a(19) =-12705a(20) =945a(21) =-231891660a(22) =57972915a(23) =-19324305a(24) =5521230a(25) =-1171170a(26) =159705a(27) =-10395a(28) =-13043905875a(29) =3381753375