OFFSET
1,2
COMMENTS
Row number in A085612 triangle of prime signatures.
a(n) is not the same for all numbers n with the same prime signature. For such a sequence, see A101296. - Peter Munn, Oct 23 2023
LINKS
Rémy Sigrist, Table of n, a(n) for n = 1..10000 (first 150 terms from Matthew Goers)
Rémy Sigrist, PARI program for A224401
EXAMPLE
PROG
(Haskell)
import Data.List (findIndex); import Data.Maybe (fromJust)
a224401 = (+ 1) . fromJust . (`findIndex` a085612_tabf) . elem
-- Reinhard Zumkeller, Jun 05 2013
(PARI) See Links section.
CROSSREFS
KEYWORD
nonn
AUTHOR
Matthew Goers, Apr 05 2013
STATUS
approved