23678

Appears in sequences

• Arrange digits of 2^n in ascending order.at n=15A028909
• Arrange digits of cubes in ascending order.at n=32A032553
• Numbers k such that 4^k*(2^k - 1) - 1 is prime.at n=9A098857
• Largest number not the sum of n distinct nonzero squares.at n=35A129210
• Number of (n+1)X(n+1) -7..7 symmetric matrices with every 2X2 subblock having sum zero and two or three distinct values.at n=7A211444
• Number of nX5 0..1 arrays with exactly floor(nX5/2) elements unequal to at least one horizontal, diagonal or antidiagonal neighbor, with new values introduced in row major 0..1 order.at n=5A222506
• T(n,k)=Number of nXk 0..1 arrays with exactly floor(nXk/2) elements unequal to at least one horizontal, diagonal or antidiagonal neighbor, with new values introduced in row major 0..1 order.at n=50A222509
• Number of 6Xn 0..1 arrays with exactly floor(6Xn/2) elements unequal to at least one horizontal, diagonal or antidiagonal neighbor, with new values introduced in row major 0..1 order.at n=4A222514
• Number of partitions p of n such that the multiplicity of 2*min(p) is a part.at n=42A240496
• a(n) is the first k such that A277515(k) is the n-th prime.at n=17A278107
• Expansion of Product_{k>=1} ((1 - x^(7*(2*k-1))) * (1 - x^(7*k)) / (1 - x^k)).at n=42A280937
• Increasing sequence a(n)>a(n-1) where a(n)=smallest integer not yet in the sequence with no digits shared with the previous term a(n-1), no repeated digits, and no 0-digit allowed.at n=26A290386
• Increasing sequence where a(n) is the smallest integer not yet in the sequence with no digits shared with the term a(n-2), no repeated digits, and no 0-digit allowed.at n=43A290387
• Number of binary strings of length n whose only palindromic prefixes are "1" and "11".at n=17A307909