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A129629 Nonzero bisection of Moebius transform of A082392. 2
1, 1, 3, 7, 14, 31, 63, 123, 255, 511, 1015, 2047, 4092, 8176, 16383, 32767, 65503, 131061, 262143, 524223, 1048575, 2097151, 4194162, 8388607, 16777208, 33554175, 67108863, 134217693, 268434943, 536870911, 1073741823 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,3

COMMENTS

Possibly identical to A011947.

LINKS

Table of n, a(n) for n=1..31.

FORMULA

a(n)=2^n-A138944(n) - M. F. Hasler, May 03 2008  (sequence number appears to be in error, Joerg Arndt, Mar 25 2013)

PROG

(PARI) A129629(Nmax=100)={ local( d=2*Nmax+3, b=Vec( sum( k=0, log(d)\log(2), (x^2^k)/(1-2*x^2^(k+1)), O(x^d)))); vector( Nmax, i, sumdiv(i*2-1, k, moebius((i*2-1)/k)*b[k])) } - M. F. Hasler, May 03 2008

CROSSREFS

Sequence in context: A036892 A123707 A011947 * A223136 A089526 A261051

Adjacent sequences:  A129626 A129627 A129628 * A129630 A129631 A129632

KEYWORD

nonn

AUTHOR

Ralf Stephan, May 31 2007

STATUS

approved

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Last modified May 28 17:37 EDT 2020. Contains 334684 sequences. (Running on oeis4.)