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

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

Offset: 1

Author

Robert B Fowler, Aug 31 2024

Keywords

• easy
• fini
• nonn
• full

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

• Wikipedia, Atomic clock.

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.