78939

Appears in sequences

• Expansion of 1/((1-2x)(1-4x)(1-7x)(1-12x)).at n=4A025975
• Array defined in A064643 read from left to right (cf. A107783).at n=37A064644
• Numbers k such that (k, sigma(k)) lies on a circle with integral radius centered at the origin, i.e., k^2 + sigma(k)^2 is a square.at n=36A066764
• Array defined in A064643 read in direction in which it was created.at n=37A107783
• Number of multisets of nonempty words with a total of n letters over 7-ary alphabet such that within each word every letter of the alphabet is at least as frequent as the subsequent alphabet letter.at n=8A292722