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A039425 Numbers n such that representation in base 10 has same nonzero number of 4's and 7's. 0
47, 74, 147, 174, 247, 274, 347, 374, 407, 417, 427, 437, 457, 467, 470, 471, 472, 473, 475, 476, 478, 479, 487, 497, 547, 574, 647, 674, 704, 714, 724, 734, 740, 741, 742, 743, 745, 746, 748, 749, 754, 764, 784, 794, 847, 874, 947, 974, 1047, 1074 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Table of n, a(n) for n=1..50.

CROSSREFS

Sequence in context: A052231 A092178 A165335 * A043248 A044028 A126095

Adjacent sequences:  A039422 A039423 A039424 * A039426 A039427 A039428

KEYWORD

nonn,base,easy

AUTHOR

Olivier Gérard

STATUS

approved

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Last modified May 27 21:52 EDT 2020. Contains 334671 sequences. (Running on oeis4.)