A082780 -id:A082780 - cp's OEIS frontend

A088775 a(n) = A082780(n+1)/A082780(n).

Original entry on oeis.org

11, 91, 101, 9901, 10001, 999001, 99990001, 10000000001

Offset: 1

Ray Chandler, Oct 26 2003

Cf. A082780, A088771-A088779.

A082776 a(1) = 1, a(n) = smallest palindromic multiple of a(n-1) obtained by inserting digits anywhere in a(n-1).

Original entry on oeis.org

1, 11, 121, 12221, 12233221, 122344443221, 15223441414432251, 15223441429655692414432251

Offset: 1

Amarnath Murthy, Apr 19 2003

a(n)<=(10^A055642(a(n-1))+1)*a(n-1). If a(n-1) > 10 and the last digit of a(n-1) <= 4, then a(n)<=(10^(A055642(a(n-1))-1)+1)*a(n-1). - Chai Wah Wu, Mar 06 2021

Cf. A055642, A082777, A082778, A082779, A082780.

Corrected by Ray Chandler, Oct 13 2003

a(8) from Sean A. Irvine, Apr 19 2010

A082777 a(1) = 2, a(n) = smallest palindromic multiple of a(n-1) obtained by inserting digits anywhere in a(n-1).

Original entry on oeis.org

2, 22, 242, 24442, 24466442, 243465564342, 2434655886885564342, 2434655886887998997886885564342

Offset: 1

Amarnath Murthy, Apr 19 2003

Cf. A082776, A082778, A082779, A082780, A088772.

Corrected by Ray Chandler, Oct 13 2003
a(7) from Sean A. Irvine, Apr 19 2010
a(8) from Max Alekseyev, Nov 24 2024

A082778 a(1) = 3; for n>1, a(n) = smallest palindromic multiple of a(n-1) obtained by inserting digits anywhere in a(n-1).

Original entry on oeis.org

3, 33, 363, 36663, 36699663, 36699699699663, 2363336999698969996333632

Offset: 1

Amarnath Murthy, Apr 19 2003

Cf. A082776, A082777, A082779, A082780.

Corrected by Ray Chandler, Oct 13 2003
Terms a(7) onward from Ray G. Opao, Sep 09 2004
a(7) corrected, incorrect terms a(8) onward removed by Max Alekseyev, Nov 24 2024

A082779 a(1) = 4, a(n) = smallest palindromic multiple of a(n-1) obtained by inserting digits anywhere in a(n-1).

Original entry on oeis.org

4, 44, 484, 48884, 488888884, 48778998889987784, 487789988899877888778998889987784

Offset: 1

Amarnath Murthy, Apr 19 2003

Cf. A082776, A082777, A082778, A082780.

Sequence corrected and erroneous comment removed by Sean A. Irvine, Apr 19 2010

a(7) from Max Alekseyev, Nov 24 2024

A082782 a(1) = 7, a(n) = smallest palindromic multiple of a(n-1) obtained by inserting digits anywhere in a(n-1).

Original entry on oeis.org

7, 77, 1771, 178871, 1788888871, 178888888888888871, 17111188118888288288881188111171

Offset: 1

Amarnath Murthy, Apr 19 2003

Cf. A082776, A082777, A082778, A082779, A082780, A082781, A082783.

Corrected by Ray Chandler, Oct 13 2003
a(6) from Sean A. Irvine, Apr 19 2010
a(7) from Max Alekseyev, Nov 24 2024

A082781 a(1) = 6, a(n) = smallest palindromic multiple of a(n-1) obtained by inserting digits anywhere in a(n-1).

Original entry on oeis.org

6, 66, 6006, 606606, 6006006006, 60066066066006, 60006060066006060006, 6000006006006006006006000006, 60000060066060066066066006066006000006

Offset: 1

Amarnath Murthy, Apr 19 2003

Cf. A082776, A082777, A082778, A082779, A082780, A082782, A082783.

Corrected by Ray Chandler, Oct 13 2003

a(8)-a(9) from Sean A. Irvine, Apr 19 2010

A082783 a(1) = 8, a(n) = smallest palindromic multiple of a(n-1) obtained by inserting digits anywhere in a(n-1).

Original entry on oeis.org

8, 88, 8008, 808808, 8008008008, 80088088088008, 80008080088008080008, 8000008008008008008008000008, 80000080088080088088088008088008000008

Offset: 1

Amarnath Murthy, Apr 19 2003

Cf. A082776, A082777, A082778, A082779, A082780, A082781, A082782.

Corrected and extended by Ray Chandler, Oct 13 2003

a(8)-a(9) from Sean A. Irvine, Apr 19 2010

cp's OEIS Frontend

A088775 a(n) = A082780(n+1)/A082780(n).

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A082776 a(1) = 1, a(n) = smallest palindromic multiple of a(n-1) obtained by inserting digits anywhere in a(n-1).

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A082777 a(1) = 2, a(n) = smallest palindromic multiple of a(n-1) obtained by inserting digits anywhere in a(n-1).

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A082778 a(1) = 3; for n>1, a(n) = smallest palindromic multiple of a(n-1) obtained by inserting digits anywhere in a(n-1).

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A082779 a(1) = 4, a(n) = smallest palindromic multiple of a(n-1) obtained by inserting digits anywhere in a(n-1).

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A082782 a(1) = 7, a(n) = smallest palindromic multiple of a(n-1) obtained by inserting digits anywhere in a(n-1).

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A082781 a(1) = 6, a(n) = smallest palindromic multiple of a(n-1) obtained by inserting digits anywhere in a(n-1).

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A082783 a(1) = 8, a(n) = smallest palindromic multiple of a(n-1) obtained by inserting digits anywhere in a(n-1).

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