A325493 - OEIS

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A325493

a(n) = Sum_{k=1..n} A325910(k) * 10^(2^(k-1)).

4

0, 10, 1010, 11011010, 1111001011011010, 11111111000011011111001011011010, 1111111111111111000000001111001011111111000011011111001011011010

(list; graph; refs; listen; history; text; internal format)

OFFSET

0,2

LINKS

Seiichi Manyama, Table of n, a(n) for n = 0..9

PROG

(PARI) {a(n) = sum(i=1, n, 10^2^(i-1)*((-1)^(i-1)*sum(j=0, i-1, (-1)^j*10^2^j)-(1-(-1)^i)/2)/9)}

CROSSREFS

Cf. A309597, A325910.

Sequence in context: A080120 A300571 A274069 * A006937 A037220 A179284

Adjacent sequences: A325490 A325491 A325492 * A325494 A325495 A325496

KEYWORD

nonn

AUTHOR

Seiichi Manyama, Sep 14 2019

STATUS

approved