103453

Appears in sequences

• Positive numbers k such that k and 4*k are anagrams in base 9 (written in base 9).at n=33A023081
• Numbers k such that the k-th triangular number contains only digits {1,3,5}.at n=18A119114
• a(n) is the number of unlabeled rank-3 graded lattices with 5 coatoms and n atoms.at n=19A322600