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A347322
A344899(2*n).
2
1, 8, 78, 320, 1010, 2052, 4718, 8576, 12546, 23720, 36542, 47928, 76466, 105560, 115230, 188672, 245378, 294948, 395390, 491840, 544950, 737528
OFFSET
1,2
COMMENTS
No formula is known.
CROSSREFS
Sequence in context: A272208 A136954 A328467 * A202732 A222191 A240343
KEYWORD
nonn,more
AUTHOR
N. J. A. Sloane, Sep 12 2021
STATUS
approved