a(n) = 42*binomial(n,10).

Terms

a(0) =0a(1) =0a(2) =0a(3) =0a(4) =0a(5) =0a(6) =0a(7) =0a(8) =0a(9) =0a(10) =42a(11) =462a(12) =2772a(13) =12012a(14) =42042a(15) =126126a(16) =336336a(17) =816816a(18) =1837836a(19) =3879876a(20) =7759752a(21) =14814072a(22) =27159132a(23) =48050772a(24) =82372752a(25) =137287920a(26) =223092870a(27) =354323970a(28) =551170620a(29) =841260420