63497

Appears in sequences

• a(n) = 49*n^2 - 7.at n=35A158484
• G.f.: 1/(1 - x - x^2 - x^3 + x^5 + x^6 + x^7).at n=21A227376
• Number of sets of nonempty words with a total of n letters over nonary alphabet such that within each prefix of a word every letter of the alphabet is at least as frequent as the subsequent alphabet letter.at n=11A293748