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A079719 a(n) = n + floor[sum_k{k<n}a(k)/2] with a(0)=0. 1
0, 1, 2, 4, 7, 12, 19, 29, 45, 68, 103, 156, 235, 353, 531, 797, 1197, 1796, 2695, 4044, 6067, 9101, 13653, 20480, 30721, 46083, 69125, 103689, 155534, 233302, 349954, 524932, 787399, 1181100, 1771651, 2657477, 3986217, 5979326, 8968990, 13453486 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,3

LINKS

Table of n, a(n) for n=0..39.

FORMULA

a(n)=A073941(n+4)-2 (and appears to be A005428(n+1)) =round[1.82505431574536323...*1.5^n - 2]

EXAMPLE

a(4) = 4+floor[(0+1+2+4)/2] = 4+floor[7/2] = 4+3 = 7

CROSSREFS

Sequence in context: A035297 A272465 A153252 * A300829 A036439 A175965

Adjacent sequences:  A079716 A079717 A079718 * A079720 A079721 A079722

KEYWORD

nonn

AUTHOR

Henry Bottomley, Feb 17 2003

STATUS

approved

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Last modified November 17 10:07 EST 2018. Contains 317275 sequences. (Running on oeis4.)