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A036542 a(n)=T(n,n), array T given by A047858. 0
1, 3, 11, 34, 93, 236, 571, 1338, 3065, 6904, 15351, 33782, 73717, 159732, 344051, 737266, 1572849, 3342320, 7077871, 14942190, 31457261, 66060268, 138412011, 289406954, 603979753 (list; graph; refs; listen; history; internal format)
OFFSET

0,2

FORMULA

3n * 2^(n-1) - n + 1.

CROSSREFS

Sequence in context: A032199 A018413 A004662 * A084266 A052471 A037496

Adjacent sequences:  A036539 A036540 A036541 * A036543 A036544 A036545

KEYWORD

nonn

AUTHOR

Clark Kimberling (ck6(AT)evansville.edu)

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Last modified February 16 14:37 EST 2012. Contains 205930 sequences.