A098935 a(n) = p^7 - p^5 - p^3 - p^2 where p is prime(n).

84, 1908, 74850, 806344, 19324668, 62374858, 408913614, 891388420, 3398376408, 17229339930, 27483954208, 94862481154, 194638347078, 271671521308, 506393669424, 1174292792658, 2487936351660, 3141898009018, 6059361174964, 9093315566088, 11045325053158

Offset

1,1

Links

Table of n, a(n) for n=1..21.

Dario Alejandro Alpern, Factorization using Elliptic Curve Method.

Example

If p=2, 2^7 - 2^5 - 2^3 - 2^2 = 84.

Mathematica

Table[p = Prime[n]; p^7 - p^5 - p^3 - p^2, {n, 20}]

Crossrefs

Cf. A000040.

Sequence in context: A219938 A271670 A358864 * A370572 A297486 A104674

Adjacent sequences: A098932 A098933 A098934 * A098936 A098937 A098938

Keyword

nonn

Author

Parthasarathy Nambi, Oct 20 2004

Extensions

More terms from Ray Chandler, Nov 14 2004

Status

approved