23896

Appears in sequences

• a(n) = T(n,0) + T(n,1) + ... + T(n,[ n/2 ]), T given by A026648.at n=14A026656
• a(n) = 36*n^2 - 17*n + 2.at n=25A157265
• Numbers k such that 2*14^k-1 is prime.at n=6A273517
• Partial sums of A029940 (Product_{d|n} phi(d)).at n=37A280131
• Number of first/rest balanced rooted plane trees with n nodes.at n=25A318049
• Expansion of Product_{k>=1} (1 + x^k + x^(k+2)).at n=42A345729