154926domain: NAppears in sequencesConvolution of Lucas numbers and A001950.at n=18A023622Values of m such that N = (am+1)(bm+1)(cm+1) is a 3-Carmichael number (A087788), where a,b,c = 1,2,65.at n=15A065700Numbers k such that the k-th triangular number contains only digits {0,1,2}.at n=17A119034