122500

Appears in sequences

• a(n) = (9*n + 8)^2.at n=38A017258
• a(n) = (10*n)^2.at n=35A017270
• a(n) = (11*n + 9)^2.at n=31A017498
• a(n) = (12*n + 2)^2.at n=29A017546
• Smallest nontrivial extension of n^2 which is a square.at n=34A030686
• Squares which are the concatenation of two nonzero squares.at n=17A039686
• Numbers n such that the square root of n is an integer and a multiple of the sum of the digits of n.at n=33A067521
• Squares containing 2k digits in which the sum of the first k digits = that of the rest.at n=2A068897
• n^2(n+1)(2n+1)^2(7n+1)/36.at n=7A073351
• Final terms of rows of A077346.at n=11A077347
• Squares for which the sum of the digits is a triangular number.at n=34A118488
• Squares for which both the sum of the digits and the product of the digits is a triangular number.at n=18A118490
• a(n) = ((n+1)*(2*n-1))^2.at n=13A123198
• Squares of the form p1 - 1 where p1 is a lower twin prime.at n=14A145823
• Squares which are concatenation of two positive squares with possible intervening zeros.at n=19A147608
• Squares such that square+-3=primes.at n=16A153262
• Squares that remain squares when prefixed with an 8.at n=5A167043
• Squares that remains a square when some single digit is inserted in front of its decimal expansion.at n=26A167045
• Numbers with 45 divisors.at n=24A175752
• Squares n with digit 1 that remain positive square after omitting all 1's from n.at n=10A176899