71357

Appears in sequences

• s(1)t(n) + s(2)t(n-1) + ... + s(k)t(n+1-k), where k = [ (n+1)/2 ], s = (composite numbers), t = (F(2), F(3), ...).at n=17A024589
• a(n) = s(1)t(n) + s(2)t(n-1) + ... + s(k)t(n-k+1), where k = [ n/2 ], s = (composite numbers), t = (F(2), F(3), F(4), ...).at n=16A025103
• Number of 6-ary rooted trees with n nodes and height at most 8.at n=15A036625
• Numbers k such that (5*10^k - 143)/3 is prime.at n=28A271821
• p-INVERT of the positive integers, where p(S) = 1 - S^2 - S^4.at n=11A290899