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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
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, PARI/GP program
PROG
(See link for PARI/GP program)
CROSSREFS
For primes of a056240-types 2 and 3 see A300334 and A300359.
Sequence in context: A194337 A365335 A376663 * A369162 A329684 A294619
KEYWORD
sign
AUTHOR
N. J. A. Sloane, Mar 10 2018
STATUS
approved