A087756 a(n) = A087745(n+1).

1, 3, 3, 5, 5, 15, 15, 17, 17, 51, 51, 85, 85, 255, 255, 257, 257, 771, 771, 1285, 1285, 3855, 3855, 4369, 4369, 13107, 13107, 21845, 21845, 65535, 65535, 65537, 65537, 196611, 196611, 327685, 327685, 983055, 983055, 1114129, 1114129

Offset: 0

Author

Philippe Deléham, Oct 02 2003

Keywords

• base
• easy
• nonn
• less

Comments

Essentially a duplicate of A087745.

Mitrinovic's triangles A049458, A049460, A051339, A051380 and triangle of Stirling numbers of first kind (A008275) mod 2 converted to decimal.

See also A001317 = [1, 3, 5, 15, 17, ...].

Crossrefs

Cf. A001317, A008275, A049458, A049460, A051339, A051380.

Extensions

Edited by Omar E. Pol and N. J. A. Sloane, Dec 26 2008