a(n) = K_5(n) = Sum_{k>=0} A090285(5,k)*2^k*binomial(n,k). a(n) = 2*(2*n^5+45*n^4+360*n^3+1215*n^2+1528*n+315)/15.

A090297

a(n) = K_5(n) = Sum_{k>=0} A090285(5,k)*2^k*binomial(n,k). a(n) = 2*(2*n^5+45*n^4+360*n^3+1215*n^2+1528*n+315)/15.

Terms

    a(0) =42a(1) =462a(2) =1586a(3) =3958a(4) =8330a(5) =15694a(6) =27314a(7) =44758a(8) =69930a(9) =105102a(10) =152946a(11) =216566a(12) =299530a(13) =405902a(14) =540274a(15) =707798a(16) =914218a(17) =1165902a(18) =1469874a(19) =1833846a(20) =2266250a(21) =2776270a(22) =3373874a(23) =4069846a(24) =4875818a(25) =5804302a(26) =6868722a(27) =8083446a(28) =9463818

External references