A342952 a(n) is the least term in A007602 such that the product of digits equals A342950(n) or 0 if no such number exists.

1, 2, 3, 4, 5, 6, 7, 8, 9, 216, 7112, 135, 128, 36, 3171, 432, 0, 11111391, 12712, 1184, 175, 11111292, 1176, 111195, 624, 1171111711, 19116, 147112, 1197, 4224, 114192, 0, 113319, 672, 384, 171171112, 735, 1296, 11872, 0, 17136, 21248, 3915, 3168, 3177111, 13932, 21672

Offset: 1

Author

David A. Corneth, Mar 30 2021

Keywords

• nonn
• base

Examples

			a(10) = 216 as A342950(10) = 12 and 216 is the least number in A007602 that has product of digits 12.
a(17) = 0 as A342950(17) = 25 and the only way the product of digits of a number can be 25 is if the number has two 5's and other digits, if any, are 1. Such a number must end in 5. The tens digit can only be 1 or 5, but no possibility gives a multiple of 25.
		

Crossrefs

Cf. A007602, A342950, A342951.