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.

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A281335 a(n) is the smallest composite number having the same base-n digits (both type and quantity) as the primes and greater-than-one exponents in its factorization.

Original entry on oeis.org

25, 16, 25, 2312, 16, 7136, 27, 72646, 25, 4617, 169, 384, 4119, 3875, 289, 182585, 128, 556875, 451, 49, 529, 1012985, 679, 72420352, 42752, 585903, 841, 64, 961, 118375, 1285, 2944, 179503, 4624625, 1369
Offset: 2

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Author

Hans Havermann, Jan 20 2017

Keywords

Examples

			In base 2: The digits of 25 (11001) are the same type and quantity as the total of the prime 5 (101) and its exponent 2 (10) in 25's factorization; 2 zeros, 3 ones.
In base 26: The digits of 42752 (2,11,6,8) are the same type and quantity as the total of the prime 2 (2) and its exponent 8 (8) and the prime 167 (6,11) in 42752's factorization; 1 each of two, six, eight, eleven.
		

Crossrefs

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