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A167845 Concave primes. 5
131, 151, 157, 163, 167, 173, 179, 181, 191, 193, 197, 199, 233, 241, 251, 257, 263, 269, 271, 277, 281, 283, 293, 331, 353, 367, 373, 379, 383, 389, 397, 431, 443, 461, 463, 467, 479, 487, 491, 499, 541, 563, 571, 577, 587, 593, 599, 641, 653, 661, 673 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Primes in A135642.

Primes whose structure of digits represent a concave function or a concave object. In the graphic representation the points are connected by imaginary line segments (or line curves) from left to right.

LINKS

Table of n, a(n) for n=1..51.

CROSSREFS

Cf. A134811, A134951, A134971, A135642, A167841, A167842, A167843, A167844, A167846, A167853.

Sequence in context: A039558 A289519 A045164 * A273049 A134951 A173071

Adjacent sequences:  A167842 A167843 A167844 * A167846 A167847 A167848

KEYWORD

base,nonn

AUTHOR

Omar E. Pol, Nov 13 2009

EXTENSIONS

More terms from Max Alekseyev, Apr 24 2010

STATUS

approved

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Last modified January 22 10:32 EST 2018. Contains 298042 sequences.