A038476 Sums of 4 distinct powers of 5.

156, 656, 756, 776, 780, 3156, 3256, 3276, 3280, 3756, 3776, 3780, 3876, 3880, 3900, 15656, 15756, 15776, 15780, 16256, 16276, 16280, 16376, 16380, 16400, 18756, 18776, 18780, 18876, 18880, 18900, 19376, 19380, 19400, 19500, 78156, 78256, 78276, 78280, 78756, 78776, 78780

Offset: 1

Author

Olivier Gérard

Keywords

• nonn
• easy

Links

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

Crossrefs

Base 5 interpretation of A038446.

Cf. A000351, A038474, A038475, A038477.

Programs

Mathematica

With[{upto=80000},Select[Total/@Subsets[5^Range[0,Floor[Surd[upto-31,5]]],{4}],#<=upto&]]//Union (* Harvey P. Dale, Mar 13 2019 *)

Extensions

Offset corrected by Amiram Eldar, Jul 13 2022