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A161138 Main diagonal of the triangular array A161136. 1
1, 3, 9, 18, 80, 196, 554, 1824, 2292, 7218, 45522, 288135, 660113, 3201130, 10512530, 17675063, 191230544, 207521990 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,2
LINKS
FORMULA
a(m) = A161136(m,m).
CROSSREFS
Sequence in context: A174470 A190905 A133136 * A201222 A349453 A067864
KEYWORD
more,nonn
AUTHOR
Max Alekseyev, Jun 02 2009
STATUS
approved

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Last modified March 28 11:59 EDT 2024. Contains 371254 sequences. (Running on oeis4.)