A395999 - OEIS

A395999

Numbers k > 5 such that the greedy Egyptian fraction representation of 5/k has more terms than the shortest representation of 5/k as a sum of unit fractions.

21, 31, 32, 51, 52, 61, 63, 81, 91, 92, 111, 112, 121, 133, 141, 151, 152, 153, 161, 171, 172, 181, 182, 201, 203, 211, 212, 221, 231, 232, 241, 243, 247, 261, 271, 272, 273, 291, 292, 301, 321, 322, 323, 331, 332, 333, 343, 351, 352, 361, 371, 377, 381, 391

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OFFSET

1,1

COMMENTS

Numbers k such that A097847(k,5) < A050205(k,5).

LINKS

Pontus von Brömssen, Table of n, a(n) for n = 1..10000

Index entries for sequences related to Egyptian fractions.

EXAMPLE

21 is a term since the representation 5/21 = 1/6 + 1/14 has fewer terms than the greedy Egyptian fraction representation 5/21 = 1/5 + 1/27 + 1/945.

CROSSREFS

Cf. A050205, A097847, A395995, A395997, A395998, A396160.