A189125 Primes p such that A005245(p) < A005245(p-1)+1.

353942783, 1163385647, 1932319583, 2336924879, 4166809919, 4937621453, 5123340683, 5184740299, 5390865059, 5455982879, 5467766947, 6432033887, 6459553799, 6545574839, 6714582263, 6988649399, 7378517519, 7515851039, 7657182539, 7756383347

Offset: 1

Author

Max Alekseyev, Apr 17 2011

Keywords

• nonn
• hard

Comments

Counterexamples to the conjecture from section F26 in UPINT.

a(1) was found by Martin Fuller; a(2) was found by Janis Iraids.

The prime terms of each of the sequences A189123 and A189124.

References

• R. K. Guy, Unsolved Problems in Number Theory, Section F26.

Links

• Janis Iraids, Table of n, a(n) for n = 1..1000
• Martin N. Fuller, C program for A005245

Crossrefs

Cf. A005245, A189123, A189124.

Extensions

More terms from Janis Iraids, Apr 20 2011.