A053055 Append n-th Fibonacci number to previous term, reverse alternate terms.

1, 11, 112, 3211, 11235, 853211, 11235813, 1231853211, 112358132134, 55431231853211, 1123581321345589, 4419855431231853211, 1123581321345589144233, 7733324419855431231853211, 1123581321345589144233377610, 7890167733324419855431231853211

Offset

1,2

Links

Table of n, a(n) for n=1..16.

Felice Russo, A set of new Smarandache functions, sequences and conjectures in number theory, American Research Press, 2000.

Mathematica

Module[{nn=20, fibs}, fibs=Fibonacci[Range[nn]]; Flatten[{#[[1]], FromDigits[ Reverse[IntegerDigits[#[[2]]]]]}&/@Partition[ Table[ FromDigits[ Flatten[IntegerDigits/@Take[fibs, n]]], {n, nn}], 2]]](* Harvey P. Dale, Aug 18 2014 *)

Crossrefs

Sequence in context: A056618 A190872 A024145 * A024148 A323477 A175684

Adjacent sequences: A053052 A053053 A053054 * A053056 A053057 A053058

Keyword

easy,base,nonn,less

Author

Felice Russo, Feb 25 2000

Extensions

Corrected and extended by Harvey P. Dale, Aug 18 2014

Status

approved