23540

Appears in sequences

• Conjectured formula for irreducible 6-fold Euler sums of weight 2n+16.at n=31A019459
• Decimal part of a(n)^(1/5) starts with a 'nine digits' anagram.at n=12A034280
• Number of circular permutations with no arithmetic progressions i, ..., i+r, ..., i+2r (mod n) of any equal spacings d.at n=7A174087
• Number of right triangles on a (n+1) X 4 grid.at n=40A189808
• Number of 0..n arrays x(0..3) of 4 elements with each no smaller than the sum of its two previous neighbors modulo (n+1).at n=18A207101
• Numbers k such that k and k+1 each have at least 4 distinct prime factors.at n=41A321504
• Expansion of (1/x) * Series_Reversion( x * (1/(1-x^4) - x) ).at n=12A370841