Number of squarefree k with A002110(n) <= k < A002110(n+1) such that A001221(k) = n.

Terms

a(0) =1a(1) =3a(2) =7a(3) =19a(4) =58a(5) =152a(6) =422a(7) =995a(8) =2359a(9) =6294a(10) =14507a(11) =36370a(12) =88198a(13) =187786a(14) =386993a(15) =840033a(16) =1901930a(17) =3851372a(18) =8088478a(19) =16388857a(20) =30001902a(21) =56613547a(22) =103229263a(23) =193020113a(24) =389750880a(25) =759988983a(26) =1359250012a(27) =2350842201a(28) =3737393021a(29) =5748044055