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A352180
a(n) = 9*A006190(n)+1.
0
1, 10, 28, 91, 298, 982, 3241, 10702, 35344, 116731, 385534, 1273330, 4205521, 13889890, 45875188, 151515451, 500421538, 1652780062, 5458761721, 18029065222, 59545957384, 196666937371, 649546769494, 2145307245850, 7085468507041
OFFSET
0,2
REFERENCES
L.-N. Machaut, Query 3436, L'Intermédiaire des Mathématiciens, 16 (1909), 62-63.
CROSSREFS
Cf. A006190.
Sequence in context: A126364 A076712 A116973 * A350990 A264579 A003665
KEYWORD
nonn
AUTHOR
N. J. A. Sloane, Mar 08 2022
STATUS
approved