OFFSET
1,14
LINKS
Antti Karttunen, Table of n, a(n) for n = 1..8192
FORMULA
MATHEMATICA
a[n_] := PrimeOmega[2*n - 1] - 1; a[1] = 0; Array[a, 100] (* Amiram Eldar, Jul 23 2023 *)
PROG
CROSSREFS
KEYWORD
nonn
AUTHOR
Antti Karttunen, Apr 25 2017
STATUS
approved