|
| |
|
|
A171938
|
|
Record values in A138753 (a "prime" variation of the Collatz (3n+1) problem).
|
|
3
|
|
|
|
1, 4, 5, 8, 21, 22, 24, 29, 60, 61, 72, 73, 97, 100
(list;
graph;
refs;
listen;
history;
text;
internal format)
|
|
|
|
OFFSET
|
1,2
|
|
|
LINKS
|
Table of n, a(n) for n=1..14.
|
|
|
FORMULA
|
A171938(n) = A138753(A138756(n))
A171938 = { A138753(m) | A138753(k) < A138753(m) for all k<m }
|
|
|
PROG
|
(PARI) m=0; for( i=1, #A138753, A138753[i] > m & print1( m=A138753[i], ", "))
|
|
|
CROSSREFS
|
Cf. A124123, A138750-A138754, A138756, A006878 (analogue for Collatz problem).
Sequence in context: A145488 A050892 A145265 * A072808 A104884 A113726
Adjacent sequences: A171935 A171936 A171937 * A171939 A171940 A171941
|
|
|
KEYWORD
|
more,nonn
|
|
|
AUTHOR
|
M. F. Hasler, Apr 01 2008
|
|
|
EXTENSIONS
|
Originally submitted as A138755, but mislaid by Editor-in-Chief. Renumbered and added to OEIS, Oct 24, 2010
|
|
|
STATUS
|
approved
|
| |
|
|
