VOOZH about

URL: https://oeis.org/A117326

⇱ A117326 - OEIS

login
A117326
Indices of semiprimes in A117322 prime(n) modulo semiprime(n).
0
13, 17, 18, 20, 21, 27, 28, 30, 32, 41, 42, 43, 46, 47, 49, 53, 55, 56, 58, 59, 63, 69, 72, 75, 81
OFFSET
1,1
EXAMPLE
a(1) = 13 because A117322(13) = prime(13) modulo semiprime(13) = 41 mod 35 = 6 = 2 * 3 is semiprime.
a(2) = 17 because A117322(17) = 59 mod 49 = 10 = 2 * 5 is semiprime.
a(3) = 18 because A117322(18) = 61 mod 51 = 10 = 2 * 5 is semiprime.
a(4) = 20 because A117322(20) = 71 mod 57 = 14 = 2 * 7 is semiprime.
CROSSREFS
Sequence in context: A066918 A164062 A338371 * A052055 A272119 A387196
KEYWORD
easy,nonn
AUTHOR
Jonathan Vos Post, Mar 08 2006
STATUS
approved