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A103886 Rearrangement of prime numbers p according to number of divisors of p-/+1. 1
2, 7, 13, 3, 19, 31, 5, 41, 37, 11, 103, 43, 17, 137, 61, 23, 199, 67, 29, 307, 73, 47, 349, 97, 53, 491, 101, 59, 739, 109 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Number of divisors of p-1 (less than, equals and larger than) number of divisors of p+1. A103887 - position of p(n) in the sequence.

LINKS

Table of n, a(n) for n=1..30.

FORMULA

a(3k-2)=A103664(k); a(3k-1)=A067889(k); a(3k)=A103665(k); (k=1, 2, ...)

MATHEMATICA

Table[{A103664[[n]], A067889[[n]], A103665[[n]]}, {n, 10}]//Flatten

CROSSREFS

Cf. A067889, A103664, A103665, A103887.

Sequence in context: A230302 A230637 A301852 * A231900 A323740 A130710

Adjacent sequences:  A103883 A103884 A103885 * A103887 A103888 A103889

KEYWORD

nonn

AUTHOR

Zak Seidov, Feb 20 2005

STATUS

approved

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Last modified October 17 08:36 EDT 2019. Contains 328107 sequences. (Running on oeis4.)