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A053208 Row sums of A053207. 4
0, 3, 10, 24, 52, 108, 220, 444, 892, 1788, 3580, 7164, 14332, 28668, 57340, 114684, 229372, 458748, 917500, 1835004, 3670012, 7340028, 14680060, 29360124, 58720252, 117440508, 234881020, 469762044, 939524092, 1879048188 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

LINKS

G. C. Greubel, Table of n, a(n) for n = 0..1000

FORMULA

a(0) = 0, a(1) = 3, a(n+1) = 2*a(n) + 4, for n >= 1.

a(n) = 7*2^(n-1) - 4, n >= 1.

MATHEMATICA

Join[{0}, NestList[2#+4&, 3, 30]] (* Harvey P. Dale, Nov 08 2013 *)

Join[{0}, Table[7*2^(n-1) -4, {n, 1, 50}]] (* G. C. Greubel, Sep 03 2018 *)

PROG

(PARI) concat([0], vector(50, n, 7*2^(n-1) -4)) \\ G. C. Greubel, Sep 03 2018

(MAGMA) [0] cat [7*2^(n-1) -4: n in [1..50]]; // G. C. Greubel, Sep 03 2018

CROSSREFS

Cf. A053207, A053209.

Sequence in context: A144413 A033811 A062446 * A286209 A293797 A179608

Adjacent sequences:  A053205 A053206 A053207 * A053209 A053210 A053211

KEYWORD

nonn,easy

AUTHOR

Asher Auel (asher.auel(AT)reed.edu), Dec 13 1999

STATUS

approved

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Last modified May 19 20:41 EDT 2019. Contains 323410 sequences. (Running on oeis4.)