a(1) = 1; for n >= 1, a(n+1) is obtained by adding to a(n) the a(n)-th smallest number not dividing a(n).
A140481
a(1) = 1; for n >= 1, a(n+1) is obtained by adding to a(n) the a(n)-th smallest number not dividing a(n).
Terms
- a(0) =1a(1) =3a(2) =8a(3) =20a(4) =46a(5) =96a(6) =204a(7) =420a(8) =864a(9) =1752a(10) =3520a(11) =7068a(12) =14160a(13) =28360a(14) =56736a(15) =113508a(16) =227040a(17) =454176a(18) =908424a(19) =1816944a(20) =3633908a(21) =7267828a(22) =14535662a(23) =29071328a(24) =58142704a(25) =116285418a(26) =232570884a(27) =465141864a(28) =930283760a(29) =1860567600
External references
- oeis: A140481