39500

Appears in sequences

• Coordination sequence for A_4 lattice.at n=15A008383
• a(n) = 5*a(n-2) + 2*a(n-3).at n=15A135138
• Number of integer sequences of length n+1 with sum zero and sum of absolute values 30.at n=3A157064
• Numbers n whose sum of divisors equals the sum of divisors of 2n+1.at n=15A272553
• Numbers k such that 12*10^k + 1 is prime.at n=6A294396
• Number of nX6 0..1 arrays with every element equal to 1, 3, 5, 7 or 8 king-move adjacent elements, with upper left element zero.at n=20A298922
• Numbers k such that k * 17^k - 1 is prime.at n=7A299380
• Expansion of Sum_{n>=1} q^(n*(n-1)) / (1-q)^n.at n=44A321481
• Triangle T(n,k), n >= 2, 0 <= k <= floor(n^2/2)-2*n+2, read by rows, where T(n,k) is the number of 2*(k+2*n-2)-cycles in the n X n grid graph which pass through NW and SE corners ((0,0),(n-1,n-1)).at n=13A333667
• Expansion of e.g.f. 1 / (1 - 5 * log(1 + x))^(2/5).at n=5A365601