A105416 Numbers that are pandigital in Roman numerals using each of the symbols I, V, X, L, C, D and M exactly once.
1444, 1446, 1464, 1466, 1644, 1646, 1664, 1666
Offset: 1
Examples
a(1) = 1444 because written in Roman numeral it is MCDXLIV, using each of the symbols I, V, X, L, C, D and M exactly once.
Programs
-
PARI
A105416=vector(8,n,n--+722+n\2*8+n\4*80)*2 \\ M. F. Hasler, Jul 10 2018
Comments