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A167841 Acute-angled primes. 6
103, 107, 109, 131, 151, 163, 173, 181, 191, 193 (list; graph; refs; listen; history; internal format)
OFFSET

1,1

COMMENTS

Primes in A135601.

Primes whose structure of digits represent 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.

CROSSREFS

Cf. A134811, A134951, A134971, A135601, A167842, A167843, A167844, A167845, A167846, A167853.

Sequence in context: A094095 A187882 A074675 * A161402 A165294 A046076

Adjacent sequences:  A167838 A167839 A167840 * A167842 A167843 A167844

KEYWORD

base,more,nonn

AUTHOR

Omar E. Pol (info(AT)polprimos.com), Nov 13 2009

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Last modified February 11 21:39 EST 2012. Contains 205348 sequences.