OFFSET
1,1
LINKS
Max Alekseyev, Table of n, a(n) for n = 1..90 (terms 88..89 from Tyler Busby).
EXAMPLE
The number of divisors of 24 is 8 - which is the second term.
The number of divisors of 246 is 8 - which is the third term.
The number of divisors of 2468 is 6 - which is the fourth term.
MATHEMATICA
Table[DivisorSigma[0, FromDigits[Flatten[IntegerDigits/@(2Range[n])]]], {n, 30}] (* Harvey P. Dale, Dec 10 2016 *)
CROSSREFS
KEYWORD
base,nonn
AUTHOR
Parthasarathy Nambi, Apr 30 2005
EXTENSIONS
More terms from Harvey P. Dale, Dec 10 2016
a(30)-a(69) from Michael S. Branicky, Feb 08 2021 (computed using prime factorizations linked in A108728)
Offset corrected and a(70)-a(71) added by Max Alekseyev, Mar 21 2023
STATUS
approved