cp's OEIS Frontend

This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.

Showing 1-3 of 3 results.

A056963 Base 20 reversal of n (written in base 10).

Original entry on oeis.org

0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 1, 21, 41, 61, 81, 101, 121, 141, 161, 181, 201, 221, 241, 261, 281, 301, 321, 341, 361, 381, 2, 22, 42, 62, 82, 102, 122, 142, 162, 182, 202, 222, 242, 262, 282, 302, 322, 342, 362, 382, 3, 23, 43
Offset: 0

Views

Author

Henry Bottomley, Jul 18 2000

Keywords

Links

Crossrefs

Cf. A004086, A030101-A030108, A056960, A056961, A056962.

Programs

  • Mathematica
    IntegerReverse[Range[0, 100], 20] (* Paolo Xausa, Aug 08 2024 *)

A055962 n + reversal of base 12 digits of n (written in base 10).

Original entry on oeis.org

0, 2, 4, 6, 8, 10, 12, 14, 16, 18, 20, 22, 13, 26, 39, 52, 65, 78, 91, 104, 117, 130, 143, 156, 26, 39, 52, 65, 78, 91, 104, 117, 130, 143, 156, 169, 39, 52, 65, 78, 91, 104, 117, 130, 143, 156, 169, 182, 52, 65, 78, 91, 104, 117, 130, 143, 156, 169, 182, 195, 65, 78
Offset: 0

Views

Author

Henry Bottomley, Jul 18 2000

Keywords

Comments

If n has an even number of digits in base 12 then a(n) is a multiple of 13.

Links

Crossrefs

Cf. A056961, A056964.

Programs

  • Mathematica
    Table[n + IntegerReverse[n, 12], {n, 0, 100}] (* Paolo Xausa, Aug 08 2024 *)

Formula

a(n) = n + A056961(n).

A055963 n - reversal of base 12 digits of n (written in base 10).

Original entry on oeis.org

0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 11, 0, -11, -22, -33, -44, -55, -66, -77, -88, -99, -110, 22, 11, 0, -11, -22, -33, -44, -55, -66, -77, -88, -99, 33, 22, 11, 0, -11, -22, -33, -44, -55, -66, -77, -88, 44, 33, 22, 11, 0, -11, -22, -33, -44, -55, -66, -77, 55, 44, 33, 22, 11, 0, -11, -22, -33, -44, -55, -66, 66, 55, 44
Offset: 0

Views

Author

Henry Bottomley, Jul 18 2000

Keywords

Comments

a(n) is a multiple of 11.

Links

Crossrefs

Cf. A056961, A056965.

Programs

  • Mathematica
    Table[n - IntegerReverse[n, 12], {n, 0, 100}] (* Paolo Xausa, Aug 08 2024 *)

Formula

a(n) = n - A056961(n).
Showing 1-3 of 3 results.

Started in 1964 by Neil J. A. Sloane | Maintained by The OEIS Foundation Inc.

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