a(n) = lcm(n, n+1, n+2, n+3, n+4, n+5, n+6, n+7)/840.

Terms

a(0) =0a(1) =1a(2) =3a(3) =3a(4) =33a(5) =33a(6) =429a(7) =429a(8) =429a(9) =858a(10) =4862a(11) =14586a(12) =25194a(13) =25194a(14) =1938a(15) =21318a(16) =490314a(17) =245157a(18) =72105a(19) =312455a(20) =148005a(21) =148005a(22) =4292145a(23) =390195a(24) =525915a(25) =2103660a(26) =4628052a(27) =6052068a(28) =672452a(29) =2017356