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A039994 Primes embedded in prime(n) as subsequences. 1
1, 1, 1, 1, 1, 2, 2, 1, 3, 2, 2, 3, 1, 2, 2, 3, 2, 1, 2, 2, 3, 2, 2, 1, 2, 2, 3, 3, 2, 4, 4, 5, 6, 4, 2, 3, 4, 3, 4, 6, 5, 2, 3, 4, 5, 2, 3, 4, 3, 3, 4, 5, 3, 3, 4, 4, 3, 4, 3, 2, 5, 5, 4, 4, 4, 6, 3, 4, 5, 2, 4, 4, 5, 5, 5, 3, 3, 5, 2, 1, 3, 3, 5, 3, 3, 3, 1, 4, 3, 3, 4, 4, 3, 2, 1, 4, 3, 3, 6, 3, 4, 3, 4, 3, 4 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,6

LINKS

Table of n, a(n) for n=1..105.

FORMULA

a(n) = A039995(prime(n)).

EXAMPLE

a(26) = 2 since "101" has two prime subsequences, 101 and 11.

CROSSREFS

Different from A039996.

Sequence in context: A283004 A111709 A039996 * A326394 A228425 A316842

Adjacent sequences:  A039991 A039992 A039993 * A039995 A039996 A039997

KEYWORD

nonn,base

AUTHOR

David W. Wilson

STATUS

approved

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Last modified December 13 23:14 EST 2019. Contains 329974 sequences. (Running on oeis4.)