46818

Appears in sequences

• Averages of twin prime pairs k such that k*2 and k/2 are squares.at n=10A154670
• Triangle, read by rows, T(n, k) = binomial(3*n, 2*k) + binomial(3*n, 2*(n-k)).at n=23A154919
• Triangle, read by rows, T(n, k) = binomial(3*n, 2*k) + binomial(3*n, 2*(n-k)).at n=25A154919
• a(n) = n^2*(n+1)^2/2.at n=17A163102
• Non-deficient numbers with odd sigma such that the sum of the even divisors is twice the sum of the odd divisors.at n=28A171642
• Number of bases to which terms of A141768 are strong pseudoprimes.at n=21A195328
• Numbers n such that the difference between the greatest prime divisor of n^2 + 1 and the sum of the other distinct prime divisors is equal to +-1.at n=11A244194
• Noncube integers n such that n^2 + 1 is the sum of 2 positive cubes.at n=19A267119
• a(n) = (2*n^2*(n^2 - 3) - (2*n^2 + 1)*(-1)^n + 1)/64.at n=34A302647
• Chessboard rectangles sequence (see Comments), also A037270 interleaved with A163102.at n=35A317714
• Averages k of twin prime pairs such that A075255(k) is also the average of a twin prime pair.at n=9A340570
• Number of regions formed in a hexagon by straight line segments when connecting the n-1 points between each corner that divide each edge into n equal parts to the n-1 points on the edge on the opposite side of the hexagon.at n=11A367662