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A071243
Record terms in A005179.
1
1, 2, 4, 6, 16, 64, 1024, 4096, 65536, 262144, 4194304, 268435456, 1073741824, 68719476736, 1099511627776, 4398046511104, 70368744177664, 4503599627370496, 288230376151711744, 1152921504606846976
OFFSET
1,2
COMMENTS
The only term that is not a power of 2 is the 4th term 6.
Essentially the same as A061286 with terms {1,6} added.
FORMULA
For n>2, a(n+2) = A061286(n) = 2^(A000040(n)-1) = 2^A006093(n).
CROSSREFS
Cf. A005179.
Sequence in context: A374512 A271842 A261864 * A112086 A070325 A199578
KEYWORD
nonn
AUTHOR
Amarnath Murthy, May 20 2002
EXTENSIONS
Edited, corrected and extended by Ray Chandler, Jun 28 2008
STATUS
approved