1333332

Appears in sequences

• Number of Fibonacci numbers F(k), k <= 10^n, which end in 3.at n=6A073551
• Number of palindromic divisors of a(n) sets a new record.at n=24A093036
• Numbers k such that the k-th triangular number contains only digits {0,7,8}.at n=10A119094
• Numbers k such that the k-th triangular number contains only digits {1,7,8}.at n=16A119147
• Numbers k such that the k-th triangular number contains only digits {2,7,8}.at n=17A119179
• Numbers k such that the k-th triangular number contains only digits {3,7,8}.at n=9A119201
• Numbers k such that the k-th triangular number contains only digits {4,7,8}.at n=9A119217
• Numbers k such that the k-th triangular number contains only digits {5,7,8}.at n=15A119225
• Numbers k such that the k-th triangular number contains only digits {6,7,8}.at n=10A119231
• Numbers k such that the k-th triangular number contains only digits {7,8,9}.at n=6A119237
• Numbers k such that k and k^2 use only the digits 1, 2, 3, 4 and 7.at n=23A136970
• a(n) = 111111*n.at n=11A154549
• Numbers n such that the triangular number n*(n+1)/2 has only 1 or 2 different digits in base 10.at n=48A213517
• Numbers k such that the triangular number k*(k+1)/2 has 2 different digits in base 10.at n=41A213518
• a(n) is the smallest number that has exactly n repdigit divisors.at n=24A355699