A071243 Record terms in A005179.

1, 2, 4, 6, 16, 64, 1024, 4096, 65536, 262144, 4194304, 268435456, 1073741824, 68719476736, 1099511627776, 4398046511104, 70368744177664, 4503599627370496, 288230376151711744, 1152921504606846976

Offset: 1

Author

Amarnath Murthy, May 20 2002

Keywords

• nonn

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.

Crossrefs

Cf. A005179.

Formula

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

Extensions

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