login
A039425
Numbers whose base-10 representation has the 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
OFFSET
1,1
CROSSREFS
Sequence in context: A092178 A338273 A165335 * A043248 A044028 A126095
KEYWORD
nonn,base,easy
STATUS
approved