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A055617 a(n)= A*10^(3*n)+B with A=(10^(3*n)-10^n) and B=10^(2*n). 2
990100, 999900010000, 999999000001000000, 999999990000000100000000, 999999999900000000010000000000, 999999999999000000000001000000000000, 999999999999990000000000000100000000000000 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Table of n, a(n) for n=1..7.

EXAMPLE

a(2) = (10^6-10^2)*10^6+10^4 = 999900010000.

Note that 999900010000 = 999900^2 + 010000^2 (see A055616).

PROG

(PARI) a(n) = (10^(3*n)-10^n)*10^(3*n) + 10^(2*n) \\ Michel Marcus, Jul 23 2013

CROSSREFS

Subsequence of A055616.

Sequence in context: A106782 A154674 A236034 * A055618 A341551 A216276

Adjacent sequences:  A055614 A055615 A055616 * A055618 A055619 A055620

KEYWORD

nonn,easy

AUTHOR

Ulrich Schimke (ulrschimke(AT)aol.com)

STATUS

approved

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Last modified October 24 20:35 EDT 2021. Contains 348233 sequences. (Running on oeis4.)