20791

Appears in sequences

• a(n) is the sum over all floor(k^3/n), k=0 to n inclusive.at n=42A014818
• Numbers k such that 65*2^k+1 is prime.at n=38A032382
• Smallest number that is centered polygonal in exactly n ways.at n=15A063773
• Number of ordered triples (a, b, c) with gcd(a, b, c) = 1 and 1 <= {a, b, c} <= n.at n=28A071778
• a(n) = n*(n^2 + 2*n - 1)/2.at n=33A127736
• a(n) = the least integer that is centered polygonal in exactly n ways.at n=14A279830
• Numbers n such that n^3 contains the consecutive substring 2,3,5,7.at n=19A295900
• Expansion of (1/x) * Series_Reversion( x / ((1+x)^2 - x^4) ).at n=10A371427
• Number of growing self-avoiding walks of length n on a half-infinite strip of height 5 with a trapped endpoint.at n=12A374301