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A043400
Numbers whose base-7 representation contains exactly four 1's.
0
400, 2458, 2752, 2794, 2800, 2802, 2803, 2804, 2805, 2806, 2808, 2815, 2822, 2829, 2836, 2850, 2899, 2948, 2997, 3046, 3144, 3487, 3830, 4173, 4516, 5202, 7603, 10004, 12405, 14806, 16864, 17158, 17200, 17206, 17208, 17209
OFFSET
1,1
CROSSREFS
Cf. A007093.
Sequence in context: A037991 A200837 A250847 * A038483 A250430 A281808
KEYWORD
nonn,base
STATUS
approved