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.

A169823 Multiples of 60.

Original entry on oeis.org

0, 60, 120, 180, 240, 300, 360, 420, 480, 540, 600, 660, 720, 780, 840, 900, 960, 1020, 1080, 1140, 1200, 1260, 1320, 1380, 1440, 1500, 1560, 1620, 1680, 1740, 1800, 1860, 1920, 1980, 2040, 2100, 2160, 2220, 2280, 2340, 2400, 2460, 2520, 2580, 2640, 2700
Offset: 0

Views

Author

N. J. A. Sloane, May 29 2010

Keywords

Comments

Numbers that are divisible by all of 1, 2, 3, 4, 5, 6.

Links

Crossrefs

Cf. A001477, A005843, A008585, A008586, A008587, A008588, A008592, A008594.
Cf. A008597, A008602, A169825, A169827, A249674.

Programs

Formula

From Elmo R. Oliveira, Apr 16 2024: (Start)
G.f.: 60*x/(x-1)^2.
E.g.f.: 60*x*exp(x).
a(n) = 60*n = 2*a(n-1) - a(n-2) for n >= 2.
a(n) = 2*A249674(n) = 3*A008602(n) = 4*A008597(n) = 5*A008594(n) = 6*A008592(n) = 10*A008588(n) = 12*A008587(n) = 15*A008586(n) = 20*A008585(n) = 30*A005843(n) = 60*A001477(n) = A169827(n)/14 = A169825(n)/7. (End)

A169825 Multiples of 420.

Original entry on oeis.org

0, 420, 840, 1260, 1680, 2100, 2520, 2940, 3360, 3780, 4200, 4620, 5040, 5460, 5880, 6300, 6720, 7140, 7560, 7980, 8400, 8820, 9240, 9660, 10080, 10500, 10920, 11340, 11760, 12180, 12600, 13020, 13440, 13860, 14280, 14700, 15120, 15540, 15960, 16380, 16800
Offset: 0

Views

Author

N. J. A. Sloane, May 30 2010

Keywords

Comments

Numbers that are divisible by all of 1,2,3,4,5,6,7.

Links

Crossrefs

Cf. A001477, A008589, A008596, A008597, A008602, A008603.
Cf. A135628, A169823, A169827, A249674.

Programs

Formula

a(n) = 420*n. - Wesley Ivan Hurt, Apr 11 2021
From Elmo R. Oliveira, Apr 16 2024: (Start)
G.f.: 420*x/(x-1)^2.
E.g.f.: 420*x*exp(x).
a(n) = 2*a(n-1) - a(n-2) for n >= 2.
a(n) = 7*A169823(n) = 14*A249674(n) = 15*A135628(n) = 20*A008603(n) = 21*A008602(n) = 28*A008597(n) = 30*A008596(n) = 60*A008589(n) = 420*A001477(n) = A169827(n)/2. (End)
Showing 1-2 of 2 results.

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

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