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A342283
a(n) = A342282(n)/2.
1
0, 1, 1, 3, 12, 55, 275, 1461, 8121, 46760, 276990, 1679692, 10388794, 65348331, 417122415, 2696925449, 17636415027, 116508178394, 776713914842, 5220901613826, 35357775815996, 241100774277388, 1654405307080112, 11418270330490544, 79229054480527932, 552492413404591296
OFFSET
0,4
CROSSREFS
Cf. A342282.
Sequence in context: A216493 A216494 A366100 * A120920 A179487 A350265
KEYWORD
nonn
AUTHOR
N. J. A. Sloane, Mar 19 2021
STATUS
approved