A363457 - OEIS

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A363457

Positions of products of distinct primorial numbers (A129912) in the sequence of products of primorial numbers (A025487).

1, 2, 4, 6, 9, 13, 20, 22, 27, 29, 43, 54, 55, 66, 72, 89, 93, 112, 114, 123, 140, 147, 150, 175, 186, 223, 232, 242, 246, 274, 279, 285, 290, 332, 371, 376, 425, 433, 439, 442, 488, 500, 518, 535, 539, 570, 619, 624, 656, 718, 747, 761, 783, 789, 816, 831, 860

(list; graph; refs; listen; history; text; internal format)

OFFSET

1,2

COMMENTS

Numbers k such that A025487(k) is a term of A129912.

Numbers k such that A051282(k) = A363455(k).

What is the asymptotic behavior of this sequence? Empirically, it seems that a(n) ~ A * n^c, where A and c are constants.

LINKS

Amiram Eldar, Table of n, a(n) for n = 1..10000

FORMULA

A025487(a(n)) = A129912(n).

MATHEMATICA