A098940 a(n) = (2^n - 1)^7 - 2.

-2, -1, 2185, 823541, 170859373, 27512614109, 3938980639165, 532875860165501, 70110209207109373, 9098007718612700669, 1172544775637859048445, 150599974607076225726461, 19309780749956356667109373, 2473765232992079297629970429

Offset: 0

Author

Parthasarathy Nambi, Oct 21 2004

Keywords

• sign

Examples

			a(2) = (2^2 - 1)^7 - 2 = 2185.
		

Crossrefs

These are similar to Carol's numbers (A091515).

Programs

Mathematica

Table[(2^n - 1)^7 - 2, {n, 0, 15}] (* Stefan Steinerberger, Mar 06 2006 *)

Extensions

More terms from Stefan Steinerberger, Mar 06 2006