a(n) is the index of F(n+1) at the unique occurrence of the ordered pair of reversed consecutive terms (F(n+1),F(n)) in Stern's diatomic sequence A002487, where F(k) denotes the k-th term of the Fibonacci sequence A000045.
A086893
a(n) is the index of F(n+1) at the unique occurrence of the ordered pair of reversed consecutive terms (F(n+1),F(n)) in Stern's diatomic sequence A002487, where F(k) denotes the k-th term of the Fibonacci sequence A000045.
Terms
- a(0) =1a(1) =3a(2) =5a(3) =13a(4) =21a(5) =53a(6) =85a(7) =213a(8) =341a(9) =853a(10) =1365a(11) =3413a(12) =5461a(13) =13653a(14) =21845a(15) =54613a(16) =87381a(17) =218453a(18) =349525a(19) =873813a(20) =1398101a(21) =3495253a(22) =5592405a(23) =13981013a(24) =22369621a(25) =55924053a(26) =89478485a(27) =223696213a(28) =357913941a(29) =894784853
External references
- oeis: A086893