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A093144 Third binomial transform of Pell(3n)/Pell(3). 2
0, 1, 20, 350, 6000, 102500, 1750000, 29875000, 510000000, 8706250000, 148625000000, 2537187500000, 43312500000000, 739390625000000, 12622187500000000, 215474218750000000, 3678375000000000000 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,3

LINKS

Table of n, a(n) for n=0..16.

Index entries for linear recurrences with constant coefficients, signature (20,-50).

FORMULA

G.f.: x/(1-20x+50x^2); a(n) := ((10+5sqrt(2))^n-(10-5sqrt(2))^n)/(10sqrt(2)).

CROSSREFS

Cf. A041085, A000129.

Sequence in context: A272183 A005748 A230236 * A285393 A156455 A089350

Adjacent sequences:  A093141 A093142 A093143 * A093145 A093146 A093147

KEYWORD

easy,nonn

AUTHOR

Paul Barry, Mar 26 2004

STATUS

approved

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Last modified February 21 15:11 EST 2019. Contains 320374 sequences. (Running on oeis4.)