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A167841
Acute-angled primes.
6
103, 107, 109, 131, 151, 163, 173, 181, 191, 193, 197, 241, 251, 263, 271, 281, 283, 293, 307, 313, 317, 353, 373, 383, 397, 401, 409, 419, 439, 461, 463, 487, 491, 503, 509, 523, 547, 563, 571, 587, 593, 601, 607, 613, 617, 619, 647, 659, 673, 683, 691, 701, 709, 719, 727
OFFSET
1,1
COMMENTS
Primes whose structure of digits represents an acute angle. The vertex is an internal digit. In the graphic representation the points are connected by imaginary line segments from left to right. This sequence is finite.
LINKS
Micah Manary, Python program
CROSSREFS
Primes in A135601.
Sequence in context: A212542 A074675 A235155 * A213311 A161402 A318295
KEYWORD
base,nonn,fini,full,less
AUTHOR
Omar E. Pol, Nov 13 2009
EXTENSIONS
More terms from Micah Manary, Aug 02 2022
STATUS
approved