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A152797
Column 2 of triangle A152795.
2
1, 1, 7, 63, 847, 18319, 664335, 41472271, 4540159247, 884033807631, 309652466058511, 196950960066643215, 229271330666175448335, 491789255473294398113039, 1955120793071758250021405967
OFFSET
0,3
CROSSREFS
Sequence in context: A184141 A349720 A376324 * A345383 A126883 A137810
KEYWORD
nonn
AUTHOR
Paul D. Hanna, Dec 19 2008
STATUS
approved