A093089 - OEIS

A093089

"Fibonacci in pairs": start with a(1)=1, a(2)=1; repeatedly adjoin sum of previous two terms but chopped from the right into pairs of 2 digits.

1, 1, 2, 3, 5, 8, 13, 21, 34, 55, 89, 1, 44, 90, 45, 1, 34, 1, 35, 46, 35, 35, 36, 81, 81, 70, 71, 1, 17, 1, 62, 1, 51, 1, 41, 72, 18, 18, 63, 63, 52, 52, 42, 1, 13, 90, 36, 81, 1, 26, 1, 15, 1, 4, 94, 43, 14, 1, 3, 1, 26, 1, 17, 82, 27, 27, 16, 16, 5, 98, 1, 37, 57, 15, 4, 4, 27, 27, 18

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OFFSET

1,3

COMMENTS

Do all pairs of digits appear infinitely often? The sequence is not periodic.

LINKS

Table of n, a(n) for n=1..79.

EXAMPLE

... a(11)=a(9)+a(10), a(12)=left pair of (a(10)+a(11)=55+89=1 44), a(13)=right pair of (a(10)+a(11)=55+89=1 44), a(14)=a(11)+a(12) ...

CROSSREFS

Cf. A093086, A093087, A093088.

Sequence in context: A202278 A132634 A096275 * A232666 A093091 A105471

Adjacent sequences: A093086 A093087 A093088 * A093090 A093091 A093092

KEYWORD

nonn,base

AUTHOR

Bodo Zinser, Mar 20 2004

STATUS

approved