A281907 Numbers congruent to 47867742232066880047611079 modulo 66483034025018711639862527490.

47867742232066880047611079, 66530901767250778519910138569, 133013935792269490159772666059, 199496969817288201799635193549, 265980003842306913439497721039, 332463037867325625079360248529, 398946071892344336719222776019, 465429105917363048359085303509

Offset: 1

Author

Felix Fröhlich, Feb 01 2017

Keywords

• nonn
• easy

Comments

The terms of this sequence cannot be written as +-p^a +-q^b with p, q prime and a, b nonnegative integers for any possible choice of signs (cf. Theorem in Sun, 2000).

47867742232066880047611079 is a Brier number (A076335). - Jeppe Stig Nielsen, Sep 16 2020

Links

• Fred Cohen and J. L. Selfridge, Not every number is the sum or difference of two prime powers, Math. Comp. 29 (1975), 79-81.
• Zhi-Wei Sun, On integers not of the form +-p^a+-q^b, Proceedings of the American Mathematical Society, Vol. 128, No. 4 (2000), 997-1002.

Crossrefs

Cf. A153352.

Programs

Mathematica

Table[66483034025018711639862527490 n + 47867742232066880047611079, {n, 0, 7}] (* Michael De Vlieger, Feb 02 2017 *)

PARI

a(n) = 66483034025018711639862527490*n+47867742232066880047611079

Formula

a(n) = 66483034025018711639862527490*n + 47867742232066880047611079.