OFFSET
1,1
COMMENTS
See A356143 for the list of numbers that have two or more ways to be written as the product of three divisors such that the number in binary is contained in the string concatenation of the divisors in binary.
LINKS
Scott R. Shannon, Divisor products up to 100 million.
EXAMPLE
30 is a term as 30 = 11110_2 = 5 * 3 * 2 = 101_2 * 11_2 * 10_2 and "101" + "11" + "10" = "1011110" contains "11110".
3050 is a term as 3050 = 101111101010_2 = 5 * 122 * 5 = 101_2 * 1111010_2 * 101_2 and "101" + "1111010" + "101" = "1011111010101" contains "101111101010".
See the attached text file for other examples.
CROSSREFS
KEYWORD
nonn,base
AUTHOR
Scott R. Shannon, Jul 28 2022
STATUS
approved