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A104369 Number of divisors of A104350(n) + 1. 3
2, 2, 2, 2, 2, 2, 4, 2, 2, 4, 2, 2, 4, 4, 4, 16, 16, 4, 2, 16, 4, 4, 8, 4, 2, 16, 8, 8, 2, 8, 16, 32, 16, 32, 16, 8, 8, 16, 128, 4, 32, 16, 16, 4, 16, 8, 16, 4, 8, 128 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

a(n) = A000005(A104365(n)).

LINKS

Table of n, a(n) for n=1..50.

R. Zumkeller, Products of largest prime factors of numbers <= n

CROSSREFS

Cf. A104370, A104361, A064144.

Sequence in context: A003648 A003642 A100007 * A051702 A073130 A238267

Adjacent sequences:  A104366 A104367 A104368 * A104370 A104371 A104372

KEYWORD

nonn

AUTHOR

Reinhard Zumkeller, Mar 06 2005

STATUS

approved

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Last modified January 23 13:39 EST 2020. Contains 331171 sequences. (Running on oeis4.)