A074055 Numbers k such that A074037(k) = A002034(k).

350, 525, 700, 1050, 1400, 1575, 1792, 2100, 2800, 3150, 4200, 4725, 5376, 5600, 6300, 6655, 8400, 8960, 9450, 11200, 12600, 14175, 15379, 16128, 16800, 18900, 22400, 25200, 26880, 28350, 33275, 33600, 37800, 44800, 46585, 48384, 50400, 56700, 67200, 75600

Offset

1,1

Comments

Numbers k such that sum of composites between smallest prime factor of k and largest prime factor of k is the Kempner function A002034(k).

Links

Sean A. Irvine, Table of n, a(n) for n = 1..50 [42 (non-contiguous) terms from Paul Richards]

Example

A002034(350) = 10 and 350 = 2*5*5*7, so sum of composites between 2 and 7 = 4+6 = 10.

Crossrefs

Cf. A002034, A074037.

Sequence in context: A260763 A109761 A109762 * A304282 A190645 A349952

Adjacent sequences: A074052 A074053 A074054 * A074056 A074057 A074058

Keyword

nonn

Author

Jason Earls, Sep 15 2002

Extensions

More terms from Paul Richards, Sep 20 2007

Missing terms inserted by Sean A. Irvine, Jan 07 2025

Status

approved