a(1)=1 and a(2)=1; if a(n-1) + a(n-2) == 0 (mod n) then a(n) = (a(n-1) + a(n-2))/n else a(n) = a(n-1) + a(n-2).

A330139

a(1)=1 and a(2)=1; if a(n-1) + a(n-2) == 0 (mod n) then a(n) = (a(n-1) + a(n-2))/n else a(n) = a(n-1) + a(n-2).

Terms

    a(0) =1a(1) =1a(2) =2a(3) =3a(4) =1a(5) =4a(6) =5a(7) =9a(8) =14a(9) =23a(10) =37a(11) =5a(12) =42a(13) =47a(14) =89a(15) =136a(16) =225a(17) =361a(18) =586a(19) =947a(20) =73a(21) =1020a(22) =1093a(23) =2113a(24) =3206a(25) =5319a(26) =8525a(27) =13844a(28) =22369a(29) =36213

External references