23749

Appears in sequences

• Numbers k such that k^12 == 1 (mod 13^4).at n=9A056095
• Starting positions of strings of three 7's in the decimal expansion of Pi.at n=24A083631
• Expansion of 1/(sqrt(1+4x^2)+x(1-x)).at n=22A111964
• For each permutation p of {1,2,...,n} define maxabsjump(p) = max(|p(i) - i|, 1<=i<=n); a(n) is the sum of maxabsjumps of all p.at n=6A130153
• a(n) = 1331*n - 209.at n=17A157444
• a(n) = 38*n^2 - 1.at n=24A158596
• Number of n X 4 1..2 arrays containing at least one of each value, all equal values connected, rows considered as a single number in nondecreasing order, and columns considered as a single number in nondecreasing order.at n=24A166805
• Expansion of Product_{k>=1} 1/(1 - (k*(k + 1)/2)*x^k).at n=12A305204
• Positive numbers k such that -k, -(k + 1), -(k + 2), and -(k + 3) are 4 consecutive negative negabinary-Niven numbers (A331728).at n=11A331825
• Triangle read by rows: T(n,k) is the number of embeddings on the sphere of 2-connected planar graphs with n nodes and k faces, n >= 3, k=2..2*n-4.at n=44A342060
• Products of three distinct strong primes.at n=18A363782