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A130599 Transformation of sequence 3^k by sandwiching it between 1's . +0
1
1, 1, 1, 3, 1, 9, 1, 27, 1, 81, 1, 243, 1, 729, 1, 2187, 1 (list; graph; listen)
OFFSET

0,4
CROSSREFS

Adjacent sequences: A130596 A130597 A130598 this_sequence A130600 A130601 A130602

Sequence in context: A082171 A070894 A090261 this_sequence A063467 A021762 A019736

KEYWORD

nonn

AUTHOR

Paul Curtz (bpcrtz(AT)free.fr), Jun 17 2007

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Last modified October 16 00:31 EDT 2008. Contains 145098 sequences.

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