33856

Appears in sequences

• Number of regions in regular n-gon with all diagonals drawn.at n=31A007678
• a(n) = (5*n + 4)^2.at n=36A016898
• a(n) = (6*n + 4)^2.at n=30A016958
• a(n) = (7*n+2)^2.at n=26A017006
• a(n) = (8*n)^2.at n=23A017066
• a(n) = (9*n + 4)^2.at n=20A017210
• a(n) = (10*n + 4)^2.at n=18A017318
• a(n) = (11*n + 8)^2.at n=16A017486
• a(n) = (12*n + 4)^2.at n=15A017570
• Discriminants of totally complex sextic fields (negated).at n=36A023687
• Discriminants of totally complex sextic fields (negated).at n=37A023687
• Numbers k such that phi(k) + sigma(k) is a prime.at n=45A038344
• Squares with initial digit '3'.at n=22A045786
• Denominator of 1/64 - 1/n^2.at n=15A061050
• Squares whose arithmetic mean of digits is an integer (i.e., the sum of digits is a multiple of the number of digits).at n=27A069711
• Squares x such that x + reverse of x is a prime.at n=15A072367
• Perfect powers pp such that pp+1 is prime.at n=33A075408
• Squares whose external digits (MSD and LSD) form a square. Or squares from which deleting the internal digits leaves a square.at n=35A077356
• Squares whose decimal digits are nonsquares (2, 3, 5, 6, 7, 8).at n=13A077437
• Sort the digits of these squares into descending order and drop zeros to get primes.at n=33A082921