A105985 Near-repdigit semiprimes with 4 as repeated digit.

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

Offset

1,1

Links

Table of n, a(n) for n=1..26.

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

Adjacent sequences: A105982 A105983 A105984 * A105986 A105987 A105988

Keyword

base,nonn

Author

Shyam Sunder Gupta, Apr 29 2005

Status

approved