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A136046
Bisection of A138543.
0
1, 3, 26, 345, 5754, 110586, 2341548, 53208441, 1276027610, 31930139670, 826963069140, 22035414489270, 601361536493340, 16749316314679500, 474777481850283240, 13665774112508864385
OFFSET
0,2
CROSSREFS
Sequence in context: A339298 A366315 A328269 * A206404 A373425 A262301
KEYWORD
nonn
AUTHOR
N. J. A. Sloane, Mar 25 2008
STATUS
approved