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A157140 A091411(k+3) replicated 2^k times, k= 0, 1, 2, 3, ... 0
9, 19, 19, 47, 47, 47, 47, 98, 98, 98, 98, 98, 98, 98, 98, 220, 220, 220, 220, 220, 220, 220, 220, 220, 220, 220, 220, 220, 220, 220, 220, 441, 441, 441, 441, 441, 441, 441, 441, 441, 441, 441, 441, 441, 441, 441, 441, 441, 441, 441, 441, 441, 441, 441, 441 (list; graph; refs; listen; history; internal format)
OFFSET

0,1

COMMENTS

Generated from the quadrisection b(n) =  4, 13, 23, 32, 51, 60, 70, 79, 102, 111, 121, 130,... of A156799 as follows:

1) b(n+1)-b(n) = 9, 10, 9, 19, 9, 10, 9, 23, 9, 10, 9, 19,..,

2) b(n+2)-b(n) = 19, 19, 28, 28, 19, 19, 32, 32, 19, 19, 28, 28,...,

3) b(n+4)-b(n) = 47, 47, 47, 47, 51, 51, 51, 51, 47, 47, 47, 47,...,

4) b(n+8)-b(n) = 98, 98, 98, 98, 98, 98, 98, 98, 122, 122, 122, 122, 122, 122, 122, 122, 98, .. .

The sum of neighbors at the first jump of b(n+2^k) is 9+10 = 19 (k=0), 19+28 = 47 (k=1), 47+51 = 98 (k=2), 98+122 = 220 (k=3), and in general A091411(k+3).

CROSSREFS

Sequence in context: A134115 A061750 A107780 * A075981 A079368 A167529

Adjacent sequences:  A157137 A157138 A157139 * A157141 A157142 A157143

KEYWORD

nonn

AUTHOR

Paul Curtz (bpcrtz(AT)free.fr), Feb 24 2009

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Last modified February 16 21:51 EST 2012. Contains 205978 sequences.