192721

Appears in sequences

• a(n) = (11*n + 10)^2.at n=39A017510
• a(n) = (12*n + 7)^2.at n=36A017606
• Squares resulting from procedure described in A048383.at n=17A048384
• Smallest square that contains the digits of n in its exact middle.at n=27A062689
• Composite numbers k such that the sum of the divisors of k^2 is a prime.at n=34A065405
• Squares of the form 6p+7 for p prime (A110015) that are squares of a prime.at n=34A110586
• Square numbers which are the sum of distinct double factorials (A006882).at n=32A115648
• G.f.: 1/(1-x) = Sum_{n>=0} a(n)*x^n*Product_{k=1..n+1} (1-x^k).at n=40A209405
• Odd squares not of the form p + 2^k with p prime.at n=5A276567
• Squares whose second arithmetic derivative is a square.at n=12A348425