45030

Appears in sequences

• Integers that are Rhonda numbers to base 4.at n=4A100968
• Triangle, read by rows, where the g.f. of row n equals Product_{k=0..n-1} (1 + k*y + y^2) for n>0 with a single '1' in row 0.at n=70A201949
• A diagonal of irregular triangle A201949.at n=6A201953
• a(n) = n*(5*n^2 - 3*n + 4) / 6.at n=38A203552
• A(n,k) is the n-th Rhonda number to base A002808(k), the k-th composite number; square array A(n,k), n>=1, k>=1, read by antidiagonals.at n=14A291925
• Solution of the complementary equation a(n) = a(n-1) + a(n-3) + a(n-4) + b(n-1), where a(0) = 1, a(1) = 2, a(2) = 3, a(3) = 4, b(0) = 5, b(1) = 6, b(2) = 7, b(3) = 8, and (a(n)) and (b(n)) are increasing complementary sequences.at n=20A295757