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A045719 Number of primes embedded in n-th prime. 2
0, 0, 0, 0, 0, 2, 2, 0, 2, 1, 2, 3, 0, 1, 1, 2, 1, 0, 1, 2, 3, 2, 1, 0, 2, 1, 3, 4, 1, 6, 5, 6, 10, 5, 5, 2, 6, 6, 7, 10, 9, 2, 3, 5, 9, 3, 2, 3, 2, 2, 3, 5, 3, 3, 3, 3, 2, 5, 3, 2, 5, 5, 4, 6, 4, 10, 4, 6, 7, 3, 3, 6, 6, 6, 9, 2, 5, 9, 1, 0, 5, 3, 5, 2, 3, 2, 0, 4, 3, 3, 4, 5, 2, 5, 0, 3, 2, 3, 5, 2, 4, 2, 4, 3, 6, 3 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,6

COMMENTS

a(n) counts permuted subsequences of digits of prime(n) which denote primes distinct from prime(n).

LINKS

Table of n, a(n) for n=1..106.

EXAMPLE

For example a(11)=3 because 37 generate 3 primes with its digits: 3, 7, 73

CROSSREFS

Cf. A000040.

Sequence in context: A074943 A272011 A236374 * A114906 A259179 A214667

Adjacent sequences:  A045716 A045717 A045718 * A045720 A045721 A045722

KEYWORD

nonn,base

AUTHOR

Felice Russo

EXTENSIONS

More terms from David W. Wilson

STATUS

approved

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Last modified September 22 22:24 EDT 2020. Contains 337291 sequences. (Running on oeis4.)