Triangle of generalized Chebyshev coefficients.

Terms

a(0) =1a(1) =4a(2) =1a(3) =15a(4) =7a(5) =1a(6) =54a(7) =36a(8) =10a(9) =1a(10) =189a(11) =162a(12) =66a(13) =13a(14) =1a(15) =648a(16) =675a(17) =360a(18) =105a(19) =16a(20) =1a(21) =2187a(22) =2673a(23) =1755a(24) =675a(25) =153a(26) =19a(27) =1a(28) =7290a(29) =10206