58724

Appears in sequences

• Numbers having four 8's in base 9.at n=20A043488
• Positions of 11's in A131744.at n=29A133152
• Coefficients of a Ramanujan q-series.at n=36A143184
• a(n) = the smallest k such that k^2+1 = p*A002144(n)^2, p prime of A002144 .at n=25A174492
• G.f.: exp( Sum_{n>=0} [ Sum_{k=0..2*n} A027907(n,k)^2 * x^k ]* x^n/n ), where A027907 is the triangle of trinomial coefficients.at n=12A186236
• Palindromic numbers in bases 3 and 9 written in base 10.at n=67A259386
• Numbers n such that n^2 + 1 has two distinct prime divisors less than n.at n=34A263876