A214790 Numbers n such that A214789(n) = n-6.

10, 11, 19, 31, 79, 131, 179, 239, 251, 379, 419, 431, 439, 479, 499, 571, 599, 631, 659, 719, 751, 839, 971, 1019, 1091, 1171, 1259, 1319, 1559, 1619, 1759, 1811, 1831, 1879, 1931, 1979

Offset: 1

Author

Art DuPre, Aug 03 2012

Keywords

• nonn

Comments

It is still a conjecture that 10 is the only nonprime in this sequence. This sequence is disjoint from A214791.

Crossrefs

Cf. A214789, A214791, A214792.

Programs

PARI

is(n)=my(k); while(((Mod([1, 1; 1, 0], n))^k++)[1, 2]!=-8, ); k==n-7 \\ Charles R Greathouse IV, Nov 25 2014