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A026909 (1/2)*T(2n,n), T given by A026907. 0
22, 99, 379, 1412, 5265, 19758, 74637, 283560, 1082449, 4148603, 15953607, 61526969, 237876571, 921678876, 3577968081, 13913243136, 54184698801, 211307360871, 825059443551, 3225071709981, 12619275028611, 49423455006501 (list; graph; refs; listen; history; internal format)
OFFSET

1,1

CROSSREFS

Sequence in context: A145769 A159539 A178999 * A060382 A044273 A044654

Adjacent sequences:  A026906 A026907 A026908 * A026910 A026911 A026912

KEYWORD

nonn

AUTHOR

Clark Kimberling (ck6(AT)evansville.edu)

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Last modified February 17 14:50 EST 2012. Contains 206050 sequences.