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A071243 Record terms in A005179. 0
1, 2, 4, 6, 16, 64, 1024, 4096, 65536, 262144, 4194304, 268435456, 1073741824, 68719476736, 1099511627776, 4398046511104, 70368744177664, 4503599627370496, 288230376151711744, 1152921504606846976 (list; graph; refs; listen; history; text; internal format)
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.

LINKS

Table of n, a(n) for n=1..20.

FORMULA

For n>2, a(n+2) = A061286(n) = 2^(A000040(n)-1) = 2^A006093(n).

CROSSREFS

Cf. A005179.

Sequence in context: A050838 A271842 A261864 * A112086 A070325 A199578

Adjacent sequences:  A071240 A071241 A071242 * A071244 A071245 A071246

KEYWORD

nonn

AUTHOR

Amarnath Murthy, May 20 2002

EXTENSIONS

Edited, corrected and extended by Ray Chandler, Jun 28 2008

STATUS

approved

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Last modified November 22 16:31 EST 2019. Contains 329396 sequences. (Running on oeis4.)