|
| |
|
|
A036434
|
|
Integers which cannot be written as k+tau(k) for some k.
|
|
2
|
|
|
|
1, 3, 6, 8, 11, 16, 17, 20, 22, 23, 27, 29, 35, 36, 40, 41, 44, 46, 47, 53, 54, 57, 60, 65, 67, 68, 70, 76, 77, 79, 80, 83, 87, 88, 92, 93, 94, 100, 101, 106, 107, 114, 116, 117, 121, 125, 128, 131, 132, 134, 135, 140, 142, 148, 155, 156, 157, 158, 161, 164, 166
(list;
graph;
refs;
listen;
history;
text;
internal format)
|
|
|
|
OFFSET
|
1,2
|
|
|
COMMENTS
|
Invented by the HR concept formation program.
|
|
|
LINKS
|
Table of n, a(n) for n=1..61.
S. Colton, Refactorable Numbers - A Machine Invention, J. Integer Sequences, Vol. 2, 1999, #2.
S. Colton, HR - Automatic Theory Formation in Pure Mathematics
|
|
|
EXAMPLE
|
None of 1,2,3,4,5,6,7 are such that k+tau(k)=8, so 8 is in the sequence
|
|
|
CROSSREFS
|
Cf. A036438.
Sequence in context: A085197 A164910 A135736 * A140400 A190430 A188018
Adjacent sequences: A036431 A036432 A036433 * A036435 A036436 A036437
|
|
|
KEYWORD
|
nonn
|
|
|
AUTHOR
|
Simon Colton (simonco(AT)cs.york.ac.uk)
|
|
|
STATUS
|
approved
|
| |
|
|
