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A105985 Near-repdigit semiprimes with 4 as repeated digit. 0
445, 446, 447, 454, 4414, 4442, 4443, 4449, 4474, 44441, 44494, 444441, 444494, 4444441, 4444449, 44444441, 44444446, 44444447, 444444449, 444444454, 4444444441, 4444444443, 44444444443, 44444444446, 44444444449, 444444444447 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
LINKS
EXAMPLE
a(2)=446 is a term because 446 is a semiprime and all digits are equal to 4 except one.
CROSSREFS
Sequence in context: A098255 A028460 A292139 * A160583 A340151 A025354
KEYWORD
base,nonn
AUTHOR
Shyam Sunder Gupta, Apr 29 2005
STATUS
approved

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Last modified September 11 17:54 EDT 2024. Contains 375839 sequences. (Running on oeis4.)