a(n) is the smallest proper multiple of n whose digit product is the same as the digit product of n; 0 if no such number exists.

A340204

a(n) is the smallest proper multiple of n whose digit product is the same as the digit product of n; 0 if no such number exists.

Terms

    a(0) =11a(1) =12a(2) =1113a(3) =212a(4) =15a(5) =132a(6) =11711a(7) =24a(8) =11133a(9) =20a(10) =1111a(11) =11112a(12) =1131a(13) =21112a(14) =11115a(15) =32a(16) =71111a(17) =11124a(18) =133a(19) =40a(20) =11111121a(21) =1122a(22) =161a(23) =14112a(24) =125a(25) =1612a(26) =11111111172a(27) =224a(28) =3132a(29) =60

External references