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A231292 a(n) =  Jacobsthal(n)^n, where Jacobsthal(n) = A001045(n), for n>=1. 2
1, 1, 27, 625, 161051, 85766121, 271818611107, 2724905250390625, 125015825667824393931, 21259046894411315872085401, 15087863296794400779633937999667, 41840013551409555494294964922119140625, 470091178834036922915254196307625156782873691 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,3

LINKS

Table of n, a(n) for n=1..13.

FORMULA

a(n) = (2^n - (-1)^n)^n / 3^n.

One-third the logarithmic derivative of A211893.

PROG

(PARI) {a(n)=(2^n-(-1)^n)^n/3^n}

for(n=1, 15, print1(a(n), ", "))

CROSSREFS

Cf. A211893, A231279.

Sequence in context: A185883 A212670 A099753 * A046359 A223500 A060603

Adjacent sequences:  A231289 A231290 A231291 * A231293 A231294 A231295

KEYWORD

nonn

AUTHOR

Paul D. Hanna, Nov 06 2013

STATUS

approved

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Last modified August 15 15:52 EDT 2020. Contains 336504 sequences. (Running on oeis4.)