A330744 - OEIS

A330744

Primorial deflation of A133411(n), where A133411(n) is the smallest highly composite number of the form k*a(n-1) where k is an integer greater than 1.

1, 2, 4, 6, 12, 24, 40, 60, 84, 168, 336, 528, 792, 936, 1872, 2448, 2736, 4560, 5520, 8280, 11592, 23184, 29232, 31248, 62496, 74592, 124320, 137760, 144480, 157920, 315840, 356160, 559680, 623040, 644160, 966240, 1061280, 1124640, 1686960, 1734480, 2049840, 2218320, 2330640, 2499120, 4165200, 4539600, 4726800, 4820400

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OFFSET

1,2

COMMENTS

a(n) is the unique integer k such that A108951(k) = A133411(n).

Note that this sequence is strictly growing, even though A329902 (whose subsequence this is) is not monotonic.

Conjectured to be a subsequence of A330745.

LINKS

Antti Karttunen, Table of n, a(n) for n = 1..223 (computed from the 10000 term b-file of A002182 prepared from Flammenkamp's data)

FORMULA

a(n) = A329900(A133411(n)).

PROG