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A347320
A344857(2*n).
2
0, 4, 42, 176, 540, 1152, 2534, 4608, 6984, 12580, 19250, 26016, 39988, 55076, 63570, 97920, 127024, 155088, 203946, 253360, 289044, 378884, 456918
OFFSET
1,2
COMMENTS
No formula is known.
CROSSREFS
Sequence in context: A078288 A349455 A089551 * A220835 A157719 A280956
KEYWORD
nonn,more
AUTHOR
N. J. A. Sloane, Sep 12 2021
STATUS
approved