100728

Appears in sequences

• Number of permutations of length n which avoid the patterns 1234, 4312.at n=11A116705
• Row sums of A232642, when seen as a triangle read by rows.at n=10A257956
• Smallest number k > 0 such that sigma(x) and sigma(x)+2 are both prime, where x = (6k+1)^(6n+4), or -1 if no such k exists.at n=32A275237
• Number of nX6 0..1 arrays with every element unequal to 0, 1, 2 or 3 king-move adjacent elements, with upper left element zero.at n=15A303725