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A004074 2*A004001(n) - n. 0
1, 0, 1, 0, 1, 2, 1, 0, 1, 2, 3, 2, 3, 2, 1, 0, 1, 2, 3, 4, 3, 4, 5, 4, 5, 4, 3, 4, 3, 2, 1, 0, 1, 2, 3, 4, 5, 4, 5, 6, 7, 6, 7, 8, 7, 8, 7, 6, 7, 8, 7, 8, 7, 6, 7, 6, 5, 4, 5, 4, 3, 2, 1, 0, 1, 2, 3, 4, 5, 6, 5, 6, 7, 8, 9, 8, 9, 10, 11, 10, 11, 12, 11, 12, 11, 10, 11, 12, 13, 12, 13, 14, 13, 14, 13, 12 (list; graph; refs; listen; history; internal format)
OFFSET

1,6

REFERENCES

T. Kubo et al., On Conway's recursive sequence, Discrete Math. 152 1996 225-252.

FORMULA

a(2^n)=0; for n>=1 sum(i=2^(n-1), 2^n, a(i)) = A082590(n-2) - Benoit Cloitre (benoit7848c(AT)orange.fr), Jun 04 2004

CROSSREFS

Cf. A004001.

Sequence in context: A002819 A037834 A179765 * A053646 A080776 A065358

Adjacent sequences:  A004071 A004072 A004073 * A004075 A004076 A004077

KEYWORD

nonn

AUTHOR

N. J. A. Sloane (njas(AT)research.att.com).

EXTENSIONS

More terms from Benoit Cloitre, Jun 04 2004

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Last modified February 17 14:50 EST 2012. Contains 206050 sequences.