A352180 a(n) = 9*A006190(n)+1.

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

Author

N. J. A. Sloane, Mar 08 2022

Keywords

• nonn

References

• L.-N. Machaut, Query 3436, L'Intermédiaire des Mathématiciens, 16 (1909), 62-63.

Crossrefs

Cf. A006190.