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A026762 T(2n-1,n-1), T given by A026758. Also T(2n+1,n+1), T given by A026747. 0
1, 4, 16, 66, 279, 1201, 5242, 23133, 103015, 462269, 2088146, 9487405, 43328580, 198798447, 915950385, 4236322720, 19661850045, 91549502656, 427539667095, 2002120576312, 9399659155395, 44234927105888, 208631813215116 (list; graph; refs; listen; history; internal format)
OFFSET

1,2

CROSSREFS

Sequence in context: A099781 A026872 A081915 * A082307 A099782 A109034

Adjacent sequences:  A026759 A026760 A026761 * A026763 A026764 A026765

KEYWORD

nonn

AUTHOR

Clark Kimberling (ck6(AT)evansville.edu)

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Last modified February 17 16:13 EST 2012. Contains 206050 sequences.