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A193163
Irregular table read by rows, in which row n lists the factorions in base n, for n >= 2.
6
1, 2, 1, 2, 1, 2, 7, 1, 2, 49, 1, 2, 25, 26, 1, 2, 1, 2, 1, 2, 41282, 1, 2, 145, 40585, 1, 2, 26, 48, 40472, 1, 2, 1, 2, 519326767, 1, 2, 12973363226, 1, 2, 1441, 1442, 1, 2, 2615428934649, 1, 2, 40465, 43153254185213, 43153254226251, 1, 2, 1, 2, 1, 2, 1, 2
OFFSET
2,2
COMMENTS
Because 1 and 2 are factorions in any base, these mark the start of a new row.
LINKS
Karl W. Heuer, Rows n = 2..39, flattened (each row starts with 1 and 2)
Eric Weisstein's World of Mathematics, Factorion
EXAMPLE
49 is in row 5 because 49 = 1! + 4! + 4! and is "144" in base 5.
The first few rows are:
1, 2 (binary)
1, 2 (ternary)
1, 2, 7 (quartal)
1, 2, 49 (quintal)
1, 2, 25, 26 (hexal)
1, 2 (heptal)
1, 2 (octal)
1, 2, 41282 (nonal)
1, 2, 145, 40585 (decimal)
1, 2, 26, 48, 40472 (undecimal)
1, 2 (duodecimal)
1, 2, 519326767, etc.
CROSSREFS
Sequence in context: A329602 A083273 A353398 * A106157 A181816 A113738
KEYWORD
nonn,base,tabf
AUTHOR
Karl W. Heuer, Aug 06 2011
STATUS
approved