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A027024 T(n,n+2), T given by A027023. 3
1, 5, 13, 27, 53, 101, 189, 351, 649, 1197, 2205, 4059, 7469, 13741, 25277, 46495, 85521, 157301, 289325, 532155, 978789, 1800277, 3311229, 6090303, 11201817, 20603357, 37895485, 69700667, 128199517, 235795677, 433695869 (list; graph; refs; listen; history; internal format)
OFFSET

2,2

FORMULA

G.f.: [x^2(1+x)^3]/[(1-x)(1-x-x^2-x^3)].

CROSSREFS

Pairwise sums of A027053.

Sequence in context: A023541 A079989 A062480 * A185039 A175254 A055328

Adjacent sequences:  A027021 A027022 A027023 * A027025 A027026 A027027

KEYWORD

nonn

AUTHOR

Clark Kimberling (ck6(AT)evansville.edu)

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Last modified February 17 13:13 EST 2012. Contains 206031 sequences.