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A233534
Fourth column of triangle A233530.
4
1, 4, 18, 112, 953, 10500, 143308, 2342284, 44677494, 974898636, 23957348188, 654735747960, 19696461781336, 646719936551000, 23011823302544368, 881974963187446672, 36221318006594087010, 1586737195260479665112, 73850241923431162931872, 3638980616346240786818936
OFFSET
1,2
CROSSREFS
KEYWORD
nonn
AUTHOR
Paul D. Hanna, Dec 14 2013
STATUS
approved