A366855 Least number such that the concatenation of the exponents in the prime factorization is n.

2, 4, 8, 16, 32, 64, 128, 256, 512, 1024, 6, 18, 54, 162, 486, 1458, 4374, 13122, 39366, 1048576, 12, 36, 108, 324, 972, 2916, 8748, 26244, 78732, 1073741824, 24, 72, 216, 648, 1944, 5832, 17496, 52488, 157464, 1099511627776, 48, 144, 432, 1296, 3888, 11664, 34992

Offset

1,1

Links

Table of n, a(n) for n=1..47.

Example

6 = 2 * 3, the concatenation of the exponents of the prime factors of 6 is 11, and no lesser number verifies this, so a(11) = 6.

Crossrefs

Sequence in context: A243088 A113699 A113010 * A330127 A292568 A354600

Adjacent sequences: A366852 A366853 A366854 * A366856 A366857 A366858

Keyword

nonn,base

Author

Jean-Marc Rebert, Jan 25 2024

Status

approved