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A110437 A weighted sum of Jacobi function values. 3
1, 11, 111, 1101, 11111, 111111, 1101001, 11111111, 111111111, 1101100101, 11111111111, 111101111011, 1101101101101, 11111111111111, 111111111111111, 1101101101001101, 11110101101110011, 111111111111111111 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Can be regarded as base 2 version of A110436. It would appear that a(n) has all 1's whenever 2n+1 is prime.

LINKS

Table of n, a(n) for n=1..18.

FORMULA

a(n)=sum{k=0..n, abs(Jacobi(n-k, 2k+1))10^k}

CROSSREFS

Cf. A005097.

Sequence in context: A283703 A284399 A284540 * A266624 A266790 A266592

Adjacent sequences:  A110434 A110435 A110436 * A110438 A110439 A110440

KEYWORD

easy,nonn

AUTHOR

Paul Barry, Jul 20 2005

STATUS

approved

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Last modified January 18 06:34 EST 2019. Contains 319269 sequences. (Running on oeis4.)