13333332

Appears in sequences

• Number of Fibonacci numbers F(k), k <= 10^n, which end in 3.at n=7A073551
• Numbers k such that the k-th triangular number contains only digits {0,7,8}.at n=12A119094
• Numbers k such that the k-th triangular number contains only digits {1,7,8}.at n=18A119147
• Numbers k such that the k-th triangular number contains only digits {2,7,8}.at n=20A119179
• Numbers k such that the k-th triangular number contains only digits {3,7,8}.at n=12A119201
• Numbers k such that the k-th triangular number contains only digits {4,7,8}.at n=10A119217
• Numbers k such that the k-th triangular number contains only digits {5,7,8}.at n=17A119225
• Numbers k such that the k-th triangular number contains only digits {6,7,8}.at n=13A119231
• Numbers k such that the k-th triangular number contains only digits {7,8,9}.at n=8A119237
• Numbers k such that k and k^2 use only the digits 1, 2, 3, 4 and 7.at n=27A136970
• Numbers k such that the triangular number k*(k+1)/2 has 2 different digits in base 10.at n=44A213518