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

Offset: 1

Author

Antti Karttunen, Jan 10 2020

Keywords

• nonn

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)

Crossrefs

Cf. A002182, A108951, A133411, A329900, A329902, A330745.

Programs

PARI

A330744(n) = A329900(A133411(n));

Formula

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