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A216961 a(n) = A216960(n)/2. 3
0, 0, 0, 0, 1, 0, 2, 1, 3, 3, 6, 5, 13, 12, 28, 25, 58, 53, 118, 115, 243, 236, 505, 480, 1027, 1002, 2068, 2043, 4217, 4127, 8509, 8414, 17092, 16996, 34528, 34157, 69377, 69010, 139087, 138726, 279576, 278123, 560558, 559085, 1122538, 1121029, 2250783, 2244899, 4507272 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,7
LINKS
CROSSREFS
Cf. A216960.
Sequence in context: A227774 A214920 A096373 * A241379 A108949 A167704
KEYWORD
nonn
AUTHOR
N. J. A. Sloane, Sep 27 2012
EXTENSIONS
More terms from Hakan Icoz, Dec 28 2021
STATUS
approved

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Last modified April 23 01:19 EDT 2024. Contains 371906 sequences. (Running on oeis4.)