A167845 Concave primes.

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

Offset

1,1

Comments

Primes in A135642.

Primes whose structure of digits represents a concave function or a concave object. In the graphic representation the points are connected by imaginary line segments 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