49441

Appears in sequences

• a(n) = n*2^n + 2*n^2 + 1.at n=12A046916
• Numbers k such that k and k^2 use only the digits 1, 2, 4, 8 and 9.at n=29A137000
• Coefficients in a q-analog of the function [LambertW(-2x)/(-2x)]^(1/2), as a triangle read by rows.at n=34A152550
• Numbers k such that sigma(k) - k - 1 is a perfect number.at n=14A293992
• Distance from 10^n to the next prime triplet.at n=45A357052