This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
%I A242486 #6 May 29 2014 12:08:09 %S A242486 1,4,10,14,22,26,34,36,38,46,48,50,58,60,62,74,82,84,86,90,94,98,106, %T A242486 108,110,118,122,130,132,134,142,146,154,156,158,166,170,178,182,190, %U A242486 194,202,206,210,214,218,226,230,238,242,250,252,254,262,266,270,274 %N A242486 Numbers n such that A242480(x) = n has no solution. %C A242486 A242480(n) = (n*(n+1)/2) mod n + sigma(n) mod n + antisigma(n) mod n = A142150(n) + A054024(n) + A229110(n) = (A000217(n) mod n) + (A000203(n) mod n) + (A024816(n) mod n). %C A242486 All values of a(n) are even for n > 1. Complement of A242485. %e A242486 14 is in the sequence because there is no x whose A242480(x) = 14. %Y A242486 Cf. A242480, A242481, A242482, A242483, A242484, A242485. %K A242486 nonn %O A242486 1,2 %A A242486 _Jaroslav Krizek_, May 27 2014