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A055218 T(2n+2,n), array T as in A055216. 0
1, 4, 15, 51, 168, 540, 1711, 5365, 16698, 51679, 159250, 489048, 1497681, 4576140, 13955895, 42493677, 129211818, 392441049, 1190716836, 3609608838, 10933915743, 33097421223, 100126350090, 302737691646, 914897836063 (list; graph; refs; listen; history; internal format)
OFFSET

0,2

CROSSREFS

Sequence in context: A014532 A094705 A196835 * A107307 A005492 A003013

Adjacent sequences:  A055215 A055216 A055217 * A055219 A055220 A055221

KEYWORD

nonn

AUTHOR

Clark Kimberling (ck6(AT)evansville.edu), May 07 2000

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Last modified February 15 21:56 EST 2012. Contains 205860 sequences.