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A299912 a(n) = a056240-type of n-th prime, or -1 if the a056240-type is not defined. 4
-1, -1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,47

COMMENTS

For the definition of the a056240-type of a prime, see A293652, which also gives the smallest prime of a056240-type k for k = 1, 2, 3, ....

LINKS

Michel Marcus, Table of n, a(n) for n = 1..5001

Michel Marcus, PARI/GP program

PROG

(See link for PARI/GP program)

CROSSREFS

Cf. A056240, A293652.

For primes of a056240-types 2 and 3 see A300334 and A300359.

Sequence in context: A025452 A299202 A194337 * A329684 A294619 A054977

Adjacent sequences:  A299909 A299910 A299911 * A299913 A299914 A299915

KEYWORD

sign

AUTHOR

N. J. A. Sloane, Mar 10 2018

STATUS

approved

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Last modified September 17 16:32 EDT 2021. Contains 347487 sequences. (Running on oeis4.)