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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.

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A375862 Number of caesium clock "ticks" in time units: tick, second, minute, hour, day, week, month, year, decade, century, millennium, eon (in Julian years).

Original entry on oeis.org

1, 9192631770, 551557906200, 33093474372000, 794243384928000, 5559703694496000, 24174783028746000, 290097396344952000, 2900973963449520000, 29009739634495200000, 290097396344952000000, 290097396344952000000000000
Offset: 1

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Author

Robert B Fowler, Aug 31 2024

Keywords

Comments

The standard SI second has been defined since 1968 as 9192631770 (A230458) transitions ("ticks") of the caesium-133 atom.
The values of a(7) to a(12) are based on the average Julian calendar year of 365.25 days, which appears frequently in astronomical publications, where it is usually called simply "Julian years".

Links

Crossrefs

Cf. A053401, A375666 (similar sequences based on units of seconds).
Cf. A213612, A213613, A213614 (use seconds in year).
Cf. A230458 (value of a(2)).

Formula

a(n) = A375666(n-1) * 9192631770, n>1.
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