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A254056 Sum two last digits of the sequence to get next term, starting with 1,2. 1
1, 2, 3, 5, 8, 13, 4, 7, 11, 2, 3, 5, 8, 13, 4, 7, 11, 2, 3, 5, 8, 13, 4, 7, 11, 2, 3, 5, 8, 13, 4, 7, 11, 2, 3, 5, 8, 13, 4, 7, 11, 2, 3, 5, 8, 13, 4, 7, 11, 2, 3, 5, 8, 13, 4, 7, 11 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Start with {1,2}: 1,2,3,5,8,13,4,7,11,2,3,5,8,13,4,7,11,2,3,5,8,13,4,7,... period  {11,2,3,5,8,13,4,7,}.

Sequences with any other pair of initial digits eventually merge with case {1,2} except for the case {4,5}: 4,5,9,14,5,9,14,5,9,14,... which has period {5,9,14}.

LINKS

Table of n, a(n) for n=1..57.

MATHEMATICA

a=1; b=2; s={a, b}; dd={a, b}; Do[a=dd[[-1]]+dd[[-2]]; AppendTo[s, a]; dd=Flatten[{dd, IntegerDigits[s]}], {20}]; s

CROSSREFS

Sequence in context: A135102 A214156 A078414 * A238948 A336716 A345097

Adjacent sequences:  A254053 A254054 A254055 * A254057 A254058 A254059

KEYWORD

nonn,base

AUTHOR

Zak Seidov, Jan 24 2015

STATUS

approved

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Last modified May 18 21:30 EDT 2022. Contains 353825 sequences. (Running on oeis4.)