a(n) = (1/1 + 1/(n-1) + ... + 1/C(n-[ n/2 ],[ n/2 ]))*L, where L = LCM{1, n-1, ..., C(n-[ n/2 ],[ n/2 ])}.

A025563

a(n) = (1/1 + 1/(n-1) + ... + 1/C(n-[ n/2 ],[ n/2 ]))*L, where L = LCM{1, n-1, ..., C(n-[ n/2 ],[ n/2 ])}.

Terms

    a(0) =1a(1) =1a(2) =2a(3) =3a(4) =7a(5) =19a(6) =71a(7) =91a(8) =485a(9) =1195a(10) =2825a(11) =3379a(12) =30311a(13) =35440a(14) =386765a(15) =444215a(16) =381599a(17) =864173a(18) =12849325a(19) =14382075a(20) =242411355a(21) =268746270a(22) =241122575a(23) =265178965a(24) =5523031235a(25) =6032611435a(26) =27525151138a(27) =29887618948a(28) =82357018570a(29) =88965868595

External references