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 A110758 a(n) is the number of divisors of N, where N = concatenation n times n. 4
 1, 4, 6, 12, 8, 96, 8, 64, 20, 256, 96, 2304, 64, 512, 12288, 5120, 64, 5120, 8, 6144, 24576, 3072, 64, 24576, 1536, 1024, 7168, 12288, 256, 3145728, 32, 98304, 36864, 2048, 8192, 491520, 128, 128, 49152, 131072, 128, 6291456, 256, 73728, 5242880 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,2 LINKS FORMULA a(n) = A000005(A000461(n)). - Michel Marcus, Nov 18 2018 EXAMPLE a(3) = tau(333) = 6. MATHEMATICA f[n_] := Sum[n*10^(i * Length[IntegerDigits[n]]), {i, 0, n - 1}]; Do[Print[DivisorSigma[0, f[n]]], {n, 100}] (* Ryan Propper, Jul 21 2006 *) CROSSREFS Cf. A000005, A000461. Cf. A110756, A110757, A110759, A110760. Sequence in context: A270835 A272063 A152678 * A189765 A074162 A038040 Adjacent sequences:  A110755 A110756 A110757 * A110759 A110760 A110761 KEYWORD base,nonn AUTHOR Amarnath Murthy, Aug 11 2005 EXTENSIONS Corrected and extended by Ryan Propper, Jul 21 2006 STATUS approved

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Last modified September 27 11:29 EDT 2021. Contains 347689 sequences. (Running on oeis4.)