30625

Appears in sequences

• Numbers of the form 5^i*7^j with i, j >= 0.at n=23A003595
• a(n) = (2*n - 1)*n^2.at n=25A015237
• a(n) = (5*n)^2.at n=35A016850
• a(n) = (6*n + 1)^2.at n=29A016922
• a(n) = (7*n)^2.at n=25A016982
• a(n) = (8*n + 7)^2.at n=21A017150
• a(n) = (9*n + 4)^2.at n=19A017210
• a(n) = (10*n + 5)^2.at n=17A017330
• a(n) = (11*n + 10)^2.at n=15A017510
• a(n) = (12*n + 7)^2.at n=14A017606
• Numbers with 15 divisors.at n=25A030633
• Numbers whose prime factors are 5 and 7.at n=11A033851
• Composite numbers whose prime factors contain no digits other than 5 and 7.at n=35A036320
• Squares with initial digit '3'.at n=13A045786
• a(1)=9; if n = Product p_i^e_i, n > 1, then a(n) = Product p_{i+2}^{e_i+1}.at n=23A045972
• Numbers n such that n | 9^n + 8^n + 7^n + 6^n + 5^n.at n=27A057253
• Numbers k that divide 8^k + 7^k + 6^k + 5^k + 4^k + 3^k + 2^k.at n=38A057490
• Denominator of 1/49 - 1/n^2.at n=18A061048
• Squares with digital root 7.at n=38A061101
• Squares whose sum of digits as well as product of digits is a square (allowing zero).at n=28A061869