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 A279776 #10 Dec 23 2016 21:43:26 %S A279776 8,11,14,23,26,29,32,38,41,44,47,53,56,59,62,65,68,71,74,77,80,86,89, %T A279776 92,95,101,104,107,110,119,122,125,134,137,140,152,155,173,176,179, %U A279776 182,188,191,194,197,203,206,209,212,215,218,221,224,227,230,236 %N A279776 Numbers n such that the sum of digits of 6n equals 12. %C A279776 Inspired by A088408 = A062768/6 and A279769 (the analog for 9). %t A279776 Select[Range@ 240, Total@ IntegerDigits[6 #] == 12 &] (* _Michael De Vlieger_, Dec 23 2016 *) %o A279776 (PARI) is(n)=sumdigits(6*n)==12 %Y A279776 Cf. A007953 (digital sum), A279772 (sumdigits(2n) = 4), A279773 (sumdigits(3n) = 6), A279774 (sumdigits(4n) = 8), A279775 (sumdigits(5n) = 10), A279770 (sumdigits(7n) = 14), A279768 (sumdigits(8n) = 16), A279769 (sumdigits(9n) = 18), A279777 (sumdigits(9n) = 27). %Y A279776 Digital sum of m*n equals m: A088404 = A069537/2, A088405 = A052217/3, A088406 = A063997/4, A088407 = A069540/5, A088408 = A062768/6, A088409 = A063416/7, A088410 = A069543/8. %Y A279776 Cf. A005349 (Niven or Harshad numbers), A245062 (arranged in rows by digit sums). %Y A279776 Numbers with given digital sum: A011557 (1), A052216 (2), A052217 (3), A052218 (4), A052219 (5), A052220 (6), A052221 (7), A052222 (8), A052223 (9), A052224 (10), A166311 (11), A235151 (12), A143164 (13), A235225 (14), A235226 (15), A235227 (16), A166370 (17), A235228 (18), A166459 (19), A235229 (20). %K A279776 nonn,easy,base %O A279776 1,1 %A A279776 _M. F. Hasler_, Dec 23 2016