Inrepfigit (INverse REPetitive FIbonacci-like diGIT) numbers (or Htiek numbers).

Terms

a(0) =17a(1) =21a(2) =25a(3) =42a(4) =63a(5) =84a(6) =143a(7) =286a(8) =2355a(9) =5821a(10) =6618a(11) =11709a(12) =12482a(13) =33747a(14) =39571a(15) =129109a(16) =466957a(17) =1162248a(18) =1565166a(19) =1968084a(20) =3636638a(21) =3853951a(22) =4898376a(23) =6065280a(24) =13443745a(25) =13933175a(26) =17118698a(27) =22421197a(28) =24153462377