21203

Appears in sequences

• Number of n-move bishop paths on 8x8 board from given corner to same corner.at n=6A025593
• Pseudo-random numbers: gcc 2.6.3 version for 32-bit integers.at n=12A084276
• a(n) = (7*n^3 + 6*n^2 + 5*n) / 6.at n=26A101165
• Number of n X n binary arrays symmetric under 90 degree rotation with all ones connected only in a 2X2 block with tail 1,1 1,2 1,3 2,2 2,3 in any orientation.at n=11A146052
• Number of walks within N^3 (the first octant of Z^3) starting at (0,0,0) and consisting of n steps taken from {(-1, -1, 1), (-1, 0, 0), (1, -1, 0), (1, 0, -1), (1, 1, 1)}.at n=8A149697
• Antidiagonal sums of the convolution array A213778.at n=24A213780
• a(k) such that A225258 column k of T(n,k) = n*k^3 - a(k) for large n.at n=37A225263
• a(n) = A273059(4n+2).at n=25A275918
• Numbers k such that 407*2^k+1 is prime.at n=22A323103
• Numbers that are the sum of four third powers in six or more ways.at n=29A345148
• Numbers that are the sum of four third powers in seven or more ways.at n=4A345150
• Numbers that are the sum of four third powers in exactly seven ways.at n=4A345151
• a(n) = 13*n^2 + 10*n + 3.at n=40A387659
• a(n) = A000217(n)*A000045(n).at n=13A390525