23237

Appears in sequences

• Sum of a(n) terms of 1/k^(6/7) first exceeds n.at n=23A056183
• Minimal peaks in digital expansions of Pi: positions of peaks equal to 1.at n=23A105275
• Sums of squared coefficients in the negative powers of the Catalan function: a(n) = Sum_{k=1..n+1} [x^(n-k+1)] 1/C(x^2)^k, where C(x) is the g.f. of A000108.at n=15A132459
• Number of length 2+2 0..n arrays with the sum of second differences squared multiplied by some arrangement of +-1 equal to zero.at n=27A250321
• Number of integers in n-th generation of tree T(1/3) defined in Comments.at n=41A274143
• Numbers k such that (11*10^k - 179) / 3 is prime.at n=22A278442
• 35-gonal numbers: a(n) = n*(33*n-31)/2.at n=38A282851
• Number of nonnegative solutions to (x_1)^2 + (x_2)^2 + ... + (x_9)^2 <= n.at n=17A341404
• Numbers that are the sum of eight fourth powers in ten or more ways.at n=22A345585
• Numbers that are the sum of eight fourth powers in exactly ten ways.at n=13A345842