Similar to カタラン数

AVR microcontrollers

Association for the Taxation of Financial Transactions and for Citizens' Action

AWK

Northrop B-2 Spirit

Boeing B-17 Flying Fortress

Consolidated B-24 Liberator

North American B-25 Mitchell

Boeing B-29 Superfortress

Boeing B-52 Stratofortress

BAC TSR-2

BASIC

BIOS

Bluetooth

Industrial marketing

13 (number)

19 (number)

40 (number)

70 (number)

1,000,000

Collatz conjecture

Thabit number

Sylvester's sequence

Solinas prime

P-adic Teichmüller theory

Vieta jumping

Eisenstein integer

Artin–Hasse exponential

4-manifold