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A077626 Largest term in periodic part of continued fraction expansion of square root of 1+3^n. 0
2, 6, 10, 18, 30, 54, 92, 162, 280, 486, 840, 1458, 2524, 4374, 7574, 13122, 22726, 39366, 68182, 118098, 204550, 354294, 613654, 1062882, 1840964, 3188646, 5522896, 9565938, 16568690, 28697814 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Table of n, a(n) for n=1..30.

MATHEMATICA

Table[Max[Last[ContinuedFraction[Sqrt[1+3^u]]]], {u, 1, 32}]

CROSSREFS

Cf. A077624-A077635.

Equals 2*A017913(n).

Sequence in context: A050844 A328960 A282428 * A174316 A095357 A095358

Adjacent sequences:  A077623 A077624 A077625 * A077627 A077628 A077629

KEYWORD

nonn

AUTHOR

Labos Elemer, Nov 13 2002

STATUS

approved

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Last modified May 26 02:56 EDT 2020. Contains 334613 sequences. (Running on oeis4.)