OFFSET
0,3
COMMENTS
From Antti Karttunen, Aug 23 2017: (Start)
a(0) = 1 as an empty product.
Records (new values) occur at positions: 0, 2, 4, 6, 24, 36, 64, 120, 840, 900, 1024, 1296, 4096, 7560, ...
(End)
LINKS
MATHEMATICA
Block[{nn = 60, s}, s = DivisorSigma[0, Range@ nn]; {1}~Join~Table[LCM @@ s[[1 ;; n]], {n, nn}]] (* Michael De Vlieger, Aug 23 2017 *)
PROG
(Scheme, with memoization-macro definec) (definec (A051548 n) (if (<= n 1) 1 (lcm (A000005 n) (A051548 (- n 1))))) ;; Antti Karttunen, Aug 23 2017
CROSSREFS
KEYWORD
nonn
AUTHOR
EXTENSIONS
a(0) = 1 prepended and the offset of the rest of terms corrected by Antti Karttunen, Aug 23 2017
STATUS
approved