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A133043 Number of segments needed to draw the spiral of equilateral triangles with side lengths which follow the Padovan sequence. +0
2
3, 5, 6, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 64, 65 (list; graph; listen)
OFFSET

1,1

FORMULA

a(1)=3: a(2)=5: a(3)=6; for n>3, a(n)=n+4.

CROSSREFS

Cf. Padovan sequence: A000931.

Sequence in context: A006754 A072134 A021741 this_sequence A094058 A121882 A105206

Adjacent sequences: A133040 A133041 A133042 this_sequence A133044 A133045 A133046

KEYWORD

easy,nonn

AUTHOR

Omar E. Pol (info(AT)polprimos.com), Nov 04 2007, Nov 05 2007

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Last modified July 24 12:00 EDT 2008. Contains 142294 sequences.


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