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A077634 LCM of terms in periodic part of continued fraction expansion of square root of 1+3^n. 0
2, 6, 30, 18, 90, 54, 106260, 162, 26040, 486, 341725784400, 1458, 6564164506066423389173040, 4374, 177815552218920, 13122, 2998833665484118393000638135815684490471025925316000, 39366 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Table of n, a(n) for n=1..18.

MATHEMATICA

Table[Apply[LCM, Last[ContinuedFraction[Sqrt[1+3^u]]]], {u, 1, 25}]

CROSSREFS

Cf. A077624-A077635.

Sequence in context: A117213 A127797 A338441 * A095198 A126989 A128040

Adjacent sequences:  A077631 A077632 A077633 * A077635 A077636 A077637

KEYWORD

nonn

AUTHOR

Labos Elemer, Nov 13 2002

STATUS

approved

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Last modified August 5 02:34 EDT 2021. Contains 346457 sequences. (Running on oeis4.)