19820

Appears in sequences

• Decimal part of n^(1/11) starts with a 'nine digits' anagram.at n=6A034286
• Number of partitions of n in which each part occurs an odd number (or zero) times.at n=47A055922
• Expansion of 1/(2*sqrt(1-2*x-3*x^2) - 1).at n=8A115967
• Total number of n-digit numbers requiring 3 positive biquadrates in their representation as sum of biquadrates.at n=6A186652
• Number of n X 5 0..2 arrays with every row and column nondecreasing rightwards and downwards, and the number of instances of each value within one of each other.at n=12A201274
• Costas arrays such that the corresponding permutation is connected.at n=15A213339
• Number of nondecreasing -n..n vectors of length 3 whose dot product with some nondecreasing -n..n vector equals 3.at n=24A226411
• Numbers k such that A090086(k), the smallest pseudoprime to base k (not necessarily exceeding k), is a Carmichael number.at n=30A293203
• Expansion of Product_{k>=1} 1/(1 - x^prime(k))^A056768(k).at n=39A321508
• Number of partitions of n into an even number of parts that are not multiples of 4.at n=48A339406
• G.f. A(x) satisfies: [x^n] A(x)^(n+1) = [x^n] (1 + x*A(x)^(2*n))^(n+1) for n >= 0.at n=5A360344