413595

Appears in sequences

• a(n) = binomial(n+4,4)*(4*n+5)/5.at n=24A034263
• Least triangular number t such that t = prime(n)*triangular(m) for some m>0, or 0 if no such t exists.at n=25A225503
• Smallest triangular number whose decimal expansion ends (nontrivially) with the n-th triangular number.at n=33A229262