60204
domain: N
Appears in sequences
- Numbers k whose decimal representation, read as a base-19 value and divided by k, yields an integer.at n=21A032569
- Number of decimal digits in binomial(2*10^n, 10^n).at n=5A114501
- a(n) = [x^n] Product_{d|n} (1 + x^d)/(1 - x^d).at n=56A300549
- Numbers k such that s(k) = s(k+1), where s(k) is the unitary analog of the alternating sum-of-divisors function (A307037).at n=20A333408
- a(n) is the Pisano period of prime(n)^2.at n=39A343116
- Long legs of the only primitive Pythagorean triple whose inradius is the n-th prime and whose short leg is an odd number.at n=39A367573