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A135904 Column 1 of triangle A135902. 3
1, 2, 8, 47, 356, 3252, 34448, 412546, 5488222, 80066096, 1268400628, 21651578958, 395749634342, 7705289481276, 159106051976460, 3471184678351602, 79751883928130922, 1924103020594546192, 48622055377338993264 (list; graph; refs; listen; history; text; internal format)
OFFSET
0,2
LINKS
CROSSREFS
Sequence in context: A254747 A298698 A354498 * A145846 A317366 A009566
KEYWORD
nonn
AUTHOR
Paul D. Hanna, Dec 18 2007
STATUS
approved

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Last modified April 25 03:15 EDT 2024. Contains 371964 sequences. (Running on oeis4.)