The On-Line Encyclopedia of Integer Sequences (OEIS)

A285323 revision #2

A285323

a(n) = A065642(A065642(A019565(n))) / A019565(n).

1, 4, 9, 3, 25, 4, 5, 3, 49, 4, 7, 3, 7, 4, 5, 3, 121, 4, 9, 3, 11, 4, 5, 3, 11, 4, 7, 3, 7, 4, 5, 3, 169, 4, 9, 3, 13, 4, 5, 3, 13, 4, 7, 3, 7, 4, 5, 3, 13, 4, 9, 3, 11, 4, 5, 3, 11, 4, 7, 3, 7, 4, 5, 3, 289, 4, 9, 3, 17, 4, 5, 3, 17, 4, 7, 3, 7, 4, 5, 3, 17, 4, 9, 3, 11, 4, 5, 3, 11, 4, 7, 3, 7, 4, 5, 3, 17, 4, 9, 3, 13, 4, 5, 3, 13, 4, 7, 3, 7, 4, 5, 3

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OFFSET

0,2

COMMENTS

After the initial zero, the third row of array A285321 divided by its first row.

LINKS

Table of n, a(n) for n=0..111.

FORMULA

a(n) = A065642(A065642(A019565(n))) / A019565(n).

PROG

(Scheme) (define (A285323 n) (/ (A065642 (A065642 (A019565 n))) (A019565 n)))

CROSSREFS