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A307730 a(n) = A307720(n) * A307720(n+1). 3
1, 2, 2, 3, 3, 3, 6, 4, 4, 4, 4, 6, 6, 6, 6, 6, 9, 9, 9, 9, 9, 9, 9, 9, 9, 12, 8, 8, 8, 8, 8, 8, 8, 8, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 15, 5, 5, 5, 5, 5, 7, 7, 7, 7, 7, 7, 7, 14, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 14, 14, 14, 14, 14, 14, 14 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Any integer n appears n times.

LINKS

Rémy Sigrist, Table of n, a(n) for n = 1..25000

Rémy Sigrist, Scatterplot of the first 10000000 terms

Rémy Sigrist, PARI program for A307730

EXAMPLE

The first terms in this sequence and in A307720 are:

  n   a(n)  A307720(n)

  --  ----  ----------

   1     1           1

   2     2           1

   3     2           2

   4     3           1

   5     3           3

   6     3           1

   7     6           3

   8     4           2

   9     4           2

  10     4           2

PROG

(PARI) See Links section.

CROSSREFS

Cf. A002024, A088178, A307720.

Sequence in context: A078462 A239518 A293924 * A169618 A175454 A157501

Adjacent sequences:  A307727 A307728 A307729 * A307731 A307732 A307733

KEYWORD

nonn,hear

AUTHOR

Rémy Sigrist, Apr 25 2019

STATUS

approved

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Last modified July 24 01:41 EDT 2021. Contains 346269 sequences. (Running on oeis4.)