A164946 The value A104017(n) rescaled with its decremented prime factors as described in A162290.

295788, 1003244, 2419212, 20140245, 10178892, 35839470, 24413481, 32157228, 295702416, 95828168, 107785924, 353180006543727, 320682950, 457591752, 909143104, 78888524, 735661013336064, 193098816, 26308112, 215405768, 1125114110156250, 3418986808281250, 236301822947449, 269517889, 287152344, 157098832

Offset

1,1

Comments

The entry N = A104017(n) is written as the product N = p*q*r*... of its k distinct prime factors p < q < r < ... . The (k-2)nd power multiplied by the decremented p-1 of the smallest prime factor and divided by the product of the decremented other prime factors defines a(n): a(n) = (N-1)^(k-2)*(p-1)/( (q-1)*(r-1)*...). - R. J. Mathar, Dec 16 2010

Links

Table of n, a(n) for n=1..26.

Example

The 4 factors of the first member of A104017 (11305) are 5, 7, 17 and 19. Hence the first term of the present sequence is (4*11304^2)/(6*16*18) = 295788.

Crossrefs

Cf. A104016, A104017, A162290.

Sequence in context: A137818 A303357 A251387 * A204318 A204334 A048906

Adjacent sequences: A164943 A164944 A164945 * A164947 A164948 A164949

Keyword

nonn

Author

A.K. Devaraj, Sep 02 2009

Status

approved