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A294665 Numbers n such that the largest digit of n^3 is 5. 6
5, 8, 50, 74, 80, 81, 107, 171, 177, 237, 351, 378, 468, 487, 500, 605, 684, 737, 740, 800, 810, 1064, 1070, 1271, 1311, 1365, 1474, 1605, 1645, 1710, 1724, 1758, 1770, 2247, 2364, 2370, 2474, 2485, 2824, 2885, 2925, 3247, 3510, 3780, 4680, 4718, 4870, 4934, 5000, 5247 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
COMMENTS
For any term a(n), all numbers of the form a(n)*10^k, k >= 0, are in this sequence. Primitive terms, i.e., not of this form (or equivalently: without trailing '0'), are 5, 8, 74, 81, 107, 171, 177, 237, 351, 378, 468, 487, 605, 684, 737, 1064, 1271, 1311, 1365, 1474, 1605, 1645, 1724, 1758, ...
LINKS
EXAMPLE
8 is in the sequence because the largest digit of 8^3 = 512 is 5.
PROG
(PARI) for(n=1, 2e8, vecmax(digits(n^3))==5&&print1(n", "))
CROSSREFS
Cf. A295025 (the corresponding cubes), A278937 and A294664 (same for digit 3 and 4).
Cf. A000578 (the cubes).
Sequence in context: A275571 A192379 A117474 * A323139 A284381 A165716
KEYWORD
nonn,base
AUTHOR
M. F. Hasler, Nov 12 2017
STATUS
approved

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Last modified March 28 09:04 EDT 2024. Contains 371240 sequences. (Running on oeis4.)