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A130869
Partial sums of A130752.
1
2, 7, 16, 32, 63, 126, 254, 511, 1024, 2048, 4095, 8190, 16382, 32767, 65536, 131072, 262143, 524286, 1048574, 2097151, 4194304, 8388608, 16777215, 33554430, 67108862, 134217727, 268435456, 536870912, 1073741823, 2147483646
OFFSET
0,1
FORMULA
O.g.f.: (2-x)/[(1-x)(1-2x)(1-x+x^2)]. - R. J. Mathar, Jul 04 2008
Inverse binomial transform yields 2,(5,4,3) periodically continued with period 3. - R. J. Mathar, Jul 04 2008
a(n+1)-2a(n) = A131290(n+1). 2^(n+2)-a(n) = A131026(n+2).
CROSSREFS
Sequence in context: A023550 A332232 A333395 * A212576 A208995 A023612
KEYWORD
nonn
AUTHOR
Paul Curtz, Jul 24 2007
EXTENSIONS
Edited and extended by R. J. Mathar, Jul 04 2008
STATUS
approved