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 1-2 of 2 results.

A375846 Right border of triangle A375761.

Original entry on oeis.org

2, 6, 72, 17280, 2903040000, 669139107840000000000, 1858095376984393503473664000000000000000000000, 17605663024171636760609250204915381895780997959633600512000000000000000000000000000000000000000000
Offset: 1

Views

Author

Rémy Sigrist, Aug 31 2024

Keywords

Comments

The terms of this sequence, the ratios of consecutive terms, the ratios of ratios of consecutive terms, etc. are all distinct integers.

Examples

			a(3) = A375761(3, 3) = 72.

Links

Crossrefs

Cf. A035313, A375761, A375857.

Programs

  • PARI
    \\ See Links section.

Formula

a(n) = A375761(n, n).
a(n) = Product_{k = 1..n} A375857(k)^binomial(n-1, k-1).

A375857 Left border of triangle A375761.

Original entry on oeis.org

2, 3, 4, 5, 7, 8, 10, 9, 11, 13, 14, 15, 17, 16, 18, 19, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 57, 58, 59, 60, 61, 62, 63, 64, 65, 66, 67, 68, 69, 70, 71, 73, 74
Offset: 1

Views

Author

Rémy Sigrist, Sep 01 2024

Keywords

Examples

			a(5) = A375761(5, 1) = 7.

Links

Crossrefs

Cf. A035311, A375761, A375846.

Programs

  • PARI
    \\ See Links section.

Formula

a(n) = A375761(n, 1).
Showing 1-2 of 2 results.

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

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