332930

Appears in sequences

• a(n) = 2*A076218(n).at n=5A098706
• a(n) = (n^2+1)^2+1.at n=24A178390
• Numbers k of the form p^2 + 1 (for prime p) where k^2 + 1 is also prime.at n=16A235053
• Number of 4 X n 0..1 arrays with every element equal to 0, 2, 4, 5 or 6 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero.at n=17A303326
• Integers of the form k^2 + 1, where k >= 1, that are the product of two other integers of the form k^2 + 1, where k >= 1.at n=35A372496
• Triangle read by rows: T(n, k) (2 <= k <= n) is the smallest positive integer m >= k such that the digits of m expressed in base n are the same as the first digits in base k.at n=22A380293
• Triangle read by rows q(b1,b2) with 1<b1<b2 with q(b1,b2) being the least integer k equal to or greater than b1 such that all the digits of k read in base b2 are the beginning digits of k read in base b1; or 0 iff b2 is perfect power, m^k (A001597), and b1 is m^j, 0<j<k.at n=16A380564