OFFSET
1,1
COMMENTS
The sequence of generalized tribonacci numbers is defined as beginning with 1, 3, 7. Subsequent terms are the sum of the previous three terms. Note that the sequence of these generalized tribonacci numbers has many more primes than the tribonacci sequence A000073 (whose prime indices are in A092835).
a(40) > 2*10^5. - Robert Price, Dec 24 2013
LINKS
Tony D. Noe and Jonathan Vos Post, Primes in Fibonacci n-step and Lucas n-step Sequences, J. of Integer Sequences, Vol. 8 (2005), Article 05.4.4
FORMULA
CROSSREFS
KEYWORD
nonn,more
AUTHOR
T. D. Noe, Mar 16 2005
EXTENSIONS
a(37)-a(39) from Robert Price, Dec 24 2013
Name clarified by Arthur O'Dwyer, Jul 25 2024
STATUS
approved