1245789

Appears in sequences

• n has distinct digits in ascending order and n=a-b where a has the digits of n in descending order and b has the digits of n in another order (a and b perhaps with extra zeros).at n=2A055159
• The number n has digits in ascending order and n=a-b where a has the digits of n in descending order and b has the digits of n in another order (a and b perhaps with extra zeros), ordered by a.at n=5A055162
• Seven-digit terms in A023086.at n=20A159816
• a(n) is 1/5 times the number of anti-chains of size four in "0,1,2" Motzkin trees on n edges.at n=8A330966