Fatto matematico: 1261 is a Hexanacci-like number starting from 1, 1, 1, 1, 1, and 1.
Trivia: 1261 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Data storica: June 14th is the day in 1919 that John Alcock and Arthur Whitten Brown depart St. John's, Newfoundland on the first nonstop transatlantic flight.