142873

Properties

Appears in sequences

• Number of alternating sign 2n+1 X 2n+1 matrices invariant under all symmetries of the square.at n=10A005164
• Number of permutations of length n which avoid the patterns 312, 2341, 4321.at n=15A116715
• Smaller of two consecutive prime numbers such that p1*p2*d - d = average of twin prime pairs, d (delta) = p2 - p1.at n=19A153378
• Number of length 5 0..n arrays with each partial sum starting from the beginning no more than two standard deviations from its mean.at n=9A244836
• Prime numbersat n=13255