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A226727
Places n where A225867(n)=5.
0
30, 43, 45, 60, 61, 73, 75, 90, 97, 120, 137, 151, 160, 169, 173, 180, 197, 240, 241, 257, 259, 311, 320, 331, 347, 360, 367, 389, 400, 421, 480, 491, 499, 569, 571, 601, 617, 640, 641, 647, 709, 720, 773, 800, 809, 857, 881, 919, 929, 947, 960, 971
OFFSET
1,1
COMMENTS
The proportion of prime terms has a tendency to increase. For example, 4 from the first 10 terms; 10 from the first 20 terms; 16 from the first 30 terms; 24 from the first 40 terms; 40 from the first 60 terms, 88 from the first 110 terms. We conjecture that this proportion asymptotically tends to 1.
CROSSREFS
KEYWORD
nonn
AUTHOR
Vladimir Shevelev, Jun 29 2013
STATUS
approved