a(n) = Sum_{k=1..n} antisigma(k), where antisigma(i) = sum of the nondivisors of i that are between 1 and i.

A076664

a(n) = Sum_{k=1..n} antisigma(k), where antisigma(i) = sum of the nondivisors of i that are between 1 and i.

Terms

    a(0) =0a(1) =0a(2) =2a(3) =5a(4) =14a(5) =23a(6) =43a(7) =64a(8) =96a(9) =133a(10) =187a(11) =237a(12) =314a(13) =395a(14) =491a(15) =596a(16) =731a(17) =863a(18) =1033a(19) =1201a(20) =1400a(21) =1617a(22) =1869a(23) =2109a(24) =2403a(25) =2712a(26) =3050a(27) =3400a(28) =3805a(29) =4198

External references