A098105 a(n) = 2^p - p^2 where p is the n-th prime.

0, -1, 7, 79, 1927, 8023, 130783, 523927, 8388079, 536870071, 2147482687, 137438952103, 2199023253871, 8796093020359, 140737488353119, 9007199254738183, 576460752303420007, 2305843009213690231, 147573952589676408439, 2361183241434822601807, 9444732965739290422063, 604462909807314587346847, 9671406556917033397642519

Offset

1,3

References

E.-B. Escott, Note #1642, L'Intermédiaire des Mathématiciens, 8 (1901), page 12. - N. J. A. Sloane, Mar 02 2022

Links

Table of n, a(n) for n=1..23.

Mathematica

Table[2^Prime[n] - Prime[n]^2, {n, 20}] (* Robert G. Wilson v, Sep 23 2004 *)

Crossrefs

Cf. A097201, A097202.

Sequence in context: A365782 A362773 A235370 * A201301 A159524 A113034

Adjacent sequences: A098102 A098103 A098104 * A098106 A098107 A098108

Keyword

sign

Author

Parthasarathy Nambi, Sep 22 2004

Extensions

More terms from Robert G. Wilson v, Sep 23 2004

Status

approved