Row sums of unsigned triangle |A128495|=|S(2;n,m)| (sums of squares of Chebyshev's S-polynomials).

A128496

Row sums of unsigned triangle |A128495|=|S(2;n,m)| (sums of squares of Chebyshev's S-polynomials).

Terms

    a(0) =1a(1) =2a(2) =4a(3) =9a(4) =20a(5) =50a(6) =125a(7) =324a(8) =840a(9) =2195a(10) =5736a(11) =15012a(12) =39289a(13) =102854a(14) =269260a(15) =704925a(16) =1845500a(17) =4831574a(18) =12649205a(19) =33116040a(20) =86698896a(21) =226980647a(22) =594243024a(23) =1555748424a(24) =4073002225a(25) =10663258250a(26) =27916772500a(27) =73087059249a(28) =191344405220

External references