cp's OEIS Frontend

This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.

A249335 Numbers n for which the digital sum contains the same distinct digits as the digital product but the digital sum is not equal to the digital product.

Original entry on oeis.org

99, 1137, 1173, 1317, 1371, 1713, 1731, 3117, 3171, 3344, 3434, 3443, 3711, 4334, 4343, 4433, 7113, 7131, 7311, 11558, 11585, 11855, 15158, 15185, 15518, 15581, 15815, 15851, 18155, 18515, 18551, 22334, 22343, 22433, 23234, 23243, 23324, 23342, 23423, 23432
Offset: 1

Views

Author

Jaroslav Krizek, Oct 25 2014

Keywords

Comments

Numbers n such that A007953(n) contains the same distinct digits as A007954(n) but A007953(n) is not equal to A007954(n).
Complement of A034710 with respect to A249334.

Examples

			1137 is a member since 1+1+3+7 = 12 and 1*1*3*7 = 21.
		

Crossrefs

Programs

  • Magma
    [n: n in [1..10^6] | (&*Intseq(n)) ne (&+Intseq(n)) and Set(Intseq(&*Intseq(n))) eq Set(Intseq(&+Intseq(n)))]