Sum of a(n) terms of 1/k^(6/7) first exceeds n.

Terms

a(0) =1a(1) =2a(2) =4a(3) =8a(4) =16a(5) =31a(6) =56a(7) =96a(8) =158a(9) =253a(10) =393a(11) =594a(12) =878a(13) =1271a(14) =1806a(15) =2523a(16) =3472a(17) =4711a(18) =6312a(19) =8359a(20) =10949a(21) =14199a(22) =18243a(23) =23237a(24) =29360a(25) =36816a(26) =45841a(27) =56698a(28) =69689a(29) =85152