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A026154 a(n) = T(n,n-3), where T is the array in A026148. 0
1, 3, 11, 35, 111, 343, 1049, 3177, 9559, 28611, 85293, 253461, 751296, 2222442, 6563598, 19359022, 57038247, 167911721, 493972165, 1452419661, 4268753126, 12542145548, 36841741320, 108202146520, 317748977715, 933052724721, 2739805981773 (list; graph; refs; listen; history; internal format)
OFFSET

3,2

CROSSREFS

First differences of A026328.

Sequence in context: A126939 A126940 A026125 * A025181 A004054 A068995

Adjacent sequences:  A026151 A026152 A026153 * A026155 A026156 A026157

KEYWORD

nonn

AUTHOR

Clark Kimberling (ck6(AT)evansville.edu)

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Last modified February 15 12:25 EST 2012. Contains 205786 sequences.