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 A038474 Sums of two distinct powers of 5. 5
 6, 26, 30, 126, 130, 150, 626, 630, 650, 750, 3126, 3130, 3150, 3250, 3750, 15626, 15630, 15650, 15750, 16250, 18750, 78126, 78130, 78150, 78250, 78750, 81250, 93750, 390626, 390630, 390650, 390750, 391250, 393750, 406250, 468750, 1953126, 1953130, 1953150 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 LINKS Amiram Eldar, Table of n, a(n) for n = 1..10000 MATHEMATICA Union[Total/@Subsets[5^Range[0, 15], {2}]] (* Harvey P. Dale, Jan 06 2011 *) PROG (Python) from itertools import combinations, count, takewhile def aupto(lim): p = takewhile(lambda x: x<= lim, (5**i for i in count(0))) t = (sum(c) for c in combinations(p, 2)) return sorted(filter(lambda x: x <= lim, t)) print(aupto(10**6)) # Michael S. Branicky, Jun 26 2021 CROSSREFS Base 5 interpretation of A038444. Cf. A000351, A038475, A038476, A038477. Sequence in context: A045255 A045240 A045225 * A043006 A076284 A177220 Adjacent sequences: A038471 A038472 A038473 * A038475 A038476 A038477 KEYWORD nonn,easy AUTHOR Olivier Gérard EXTENSIONS Offset changed to 1 and a(37) and beyond from Michael S. Branicky, Jun 26 2021 STATUS approved

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Last modified September 21 08:32 EDT 2023. Contains 365499 sequences. (Running on oeis4.)