987120
domain: N
Appears in sequences
- Numbers whose set of base 16 digits is {0,F}, where F base 16 = 15 base 10.at n=22A097262
- Number of compositions of n into distinct parts where each part i is marked with a word of length i over a quaternary alphabet whose letters appear in alphabetical order and all letters occur at least once in the composition.at n=7A261855