22801

Appears in sequences

• Squares of primes.at n=35A001248
• Squares of palindromes.at n=24A014186
• a(n) = (5*n + 1)^2.at n=30A016862
• a(n) = (6*n + 1)^2.at n=25A016922
• a(n) = (7*n + 4)^2.at n=21A017030
• a(n) = (8*n + 7)^2.at n=18A017150
• a(n) = (9*n + 7)^2.at n=16A017246
• a(n) = (10*n + 1)^2.at n=15A017282
• a(n) = (11*n + 8)^2.at n=13A017486
• a(n) = (12*n + 7)^2.at n=12A017606
• Pseudoprimes to base 78.at n=39A020206
• Strong pseudoprimes to base 78.at n=17A020304
• a(1) = 7; a(n+1) = a(n)-th composite.at n=38A025011
• Squares of primes, with property that all even digits occur together and all odd digits occur together.at n=12A030481
• Squares of lucky numbers.at n=31A032598
• Composite numbers whose prime factors contain no digits other than 1 and 5.at n=26A036305
• Square numbers that are concatenations of two or more prime numbers.at n=20A038692
• Squares with initial digit '2'.at n=23A045785
• sigma(n)-n is a perfect square associated with A049226.at n=19A049228
• (Terms in A014733)/4.at n=4A051476