175561
domain: N
Appears in sequences
- a(n) = (12*n + 11)^2.at n=34A017654
- McKay-Thompson series of class 23A for Monster.at n=38A058570
- a(n) = n*(n+1)*(n+2)*(n+3)+1 = (n^2 + 3*n + 1)^2.at n=19A062938
- Numbers k such that sigma(k)*phi(k) is squarefree.at n=32A065299
- Numbers having exactly four anti-divisors.at n=37A066469
- Prime powers of prime numbers such that the sum of its digits is also prime power of prime number.at n=19A076705
- Unsigned member r=-19 of the family of Chebyshev sequences S_r(n) defined in A092184.at n=5A099277
- Squares of lesser of twin primes.at n=21A108570
- Squares of the form 4*A014574(n-1) + 1.at n=27A131706
- McKay-Thompson series of class 23A for the Monster group with a(0) = 1.at n=38A134781
- Squares that becomes primes when prefixed with a 3.at n=33A167718
- Squares that becomes a prime number when prefixed with a 9.at n=26A167724
- Squares in A111153.at n=22A175255
- Number of n X n 0..1 arrays avoiding 0 0 1 and 0 1 0 horizontally and 0 0 1 and 0 1 1 vertically.at n=5A207117
- Number of nX6 0..1 arrays avoiding 0 0 1 and 0 1 0 horizontally and 0 0 1 and 0 1 1 vertically.at n=5A207121
- Number of 6Xn 0..1 arrays avoiding 0 0 1 and 0 1 0 horizontally and 0 0 1 and 0 1 1 vertically.at n=5A207126
- Squares which are a decimal concatenation of triprimes.at n=28A225151
- Lucky numbers that are prime powers.at n=35A225322
- Squares s such that s + 1234567890 is prime.at n=15A241538
- Number of length 7+2 0..n arrays with every three consecutive terms having the sum of some two elements equal to twice the third.at n=29A248440