78961

Appears in sequences

• a(n) = (10*n + 1)^2.at n=28A017282
• a(n) = (11*n + 6)^2.at n=25A017462
• a(n) = (12*n + 5)^2.at n=23A017582
• Strong pseudoprimes to base 20.at n=22A020246
• Squares which are palindromes in base 4.at n=10A029987
• Squares-of-primes in which no two adjacent digits have the same parity.at n=15A030146
• Squares in which parity of digits alternates.at n=36A030152
• Odd squares in which parity of digits alternates.at n=24A030156
• Squares with initial digit '7'.at n=24A045791
• Composite and every divisor (except 1) contains the digit 8.at n=22A062678
• Squares which when reversed are primes (ignore leading zeros).at n=27A068989
• Distinct-digit prime powers of prime numbers.at n=45A076702
• Square of primes of the form 4k+1 (A002144).at n=27A080109
• Perfect powers whose digit reversal is prime.at n=30A088112
• Sum of legs of primitive Pythagorean triangles having legs that add up to a square, sorted on hypotenuse.at n=34A089552
• Least n-pseudoprime which is a power of a prime number; smallest prime-power pseudoprime to base n.at n=19A090096
• Unsigned member r=-5 of the family of Chebyshev sequences S_r(n) defined in A092184.at n=7A098305
• Squares of lesser of twin primes.at n=18A108570
• Squares of the form 6p + 7, where p is a prime.at n=38A110015
• Squares of the form 6p+7 for p prime (A110015) that are squares of a prime.at n=28A110586