143009

Appears in sequences

• Strong pseudoprimes to base 20.at n=34A020246
• Strong pseudoprimes to base 71.at n=33A020297
• a(n) = s(1)t(n) + s(2)t(n-1) + ... + s(k)t(n+1-k), where k = [ (n+1)/2 ], s = (F(2), F(3), ...), t = (odd natural numbers).at n=30A024592
• Semiprime centered cube numbers: m^3 + (m+1)^3.at n=11A180082
• Composite numbers m such that m'' = m'-1, where m' and m'' are the first and the second arithmetic derivatives of m.at n=14A189803
• Principal diagonal of the convolution array A213774.at n=15A213775