167281

Appears in sequences

• a(n) = (11*n + 2)^2.at n=37A017414
• a(n) = prime^2 and digits of prime do not appear in a(n).at n=18A030088
• Composite numbers k such that sigma(k) / d(k) is prime.at n=38A048969
• Numbers k such that k + 1 has one more divisor than k.at n=38A055927
• Numbers n such that sigma(d(n^3))==d(sigma(n^2)), where d(n) is the number of divisors of n.at n=30A063797
• Numbers having exactly four anti-divisors.at n=36A066469
• Prime powers of prime numbers such that the sum of its digits is also prime power of prime number.at n=18A076705
• A104315(n)^2.at n=18A104316
• Six-digit squares that are concatenation of two 3-digit primes.at n=6A153050
• A positive integer is included if it is a square that contains the same number of 0's as 1's when represented in binary.at n=38A164343
• Squares in A111153.at n=21A175255
• Number of n X 3 binary matrices with no two 1's adjacent diagonally or antidiagonally.at n=7A181207
• T(n,k)=Number of nXk binary matrices with no two 1's adjacent diagonally or antidiagonally.at n=47A181212
• Prime powers p^k with even exponents k > 0 such that (1 + p^k)/2 is prime.at n=23A192618
• Number of ways to place k nonattacking bishops on an n X n board, sum over all k>=0.at n=6A201862
• Number of nX4 0..1 arrays avoiding 0 0 0 and 0 1 0 horizontally and 0 0 0 and 0 1 1 vertically.at n=10A207904
• Number of nX7 0..1 arrays avoiding 0 0 0 and 1 0 1 horizontally and 0 0 1 and 0 1 1 vertically.at n=5A208012
• Number of 6 X n 0..1 arrays avoiding 0 0 0 and 1 0 1 horizontally and 0 0 1 and 0 1 1 vertically.at n=6A208016
• Lucky numbers that are prime powers.at n=34A225322
• Number of (n+2) X (2+2) 0..1 arrays with each row divisible by 5 and column not divisible by 5, read as a binary number with top and left being the most significant bits.at n=6A262789