191710

Appears in sequences

• Numbers with sum of digits = 19, divisible by 19 and containing the string "19".at n=24A121669
• Triangular array read by rows: row n shows the coefficients of this polynomial of degree n: p(x,n) = ((x+r)^n - (x+s)^n)/(r - s), where r = 3 and s = 2.at n=46A327316
• a(n) = n*(3^(n-1) - 2^(n-1)).at n=10A344215
• Centered triangular numbers which are products of four distinct primes.at n=7A359845
• Number of compositions of 7*n-3 into parts 6 and 7.at n=18A373935
• a(n) = Sum_{k=0..floor(n/2)} binomial(k+1,3*n-6*k+1).at n=41A392673