26661

Appears in sequences

• Expansion of 1/((1-4*x)*(1-7*x)*(1-8*x)).at n=4A019512
• Number of ways writing 2^n as a sum of two nonprime numbers.at n=15A062306
• Number of partitions p of n such that (number of numbers of the form 5k + 2 in p) is a part of p.at n=40A241551
• Expansion of g.f.: (1-4*z-sqrt(1-8*z+12*z^2+8*z^3-4*z^4))/(2*z^2(1-z)).at n=7A256939
• Least k such that the k-th maximal antirun of squarefree numbers has length n. Position of first appearance of n in A373127.at n=9A373128
• Numbers k such that the k-th maximal antirun of squarefree numbers has length different from all prior maximal antiruns. Sorted positions of first appearances in A373127.at n=9A373200