79540

Appears in sequences

• a(n) = n*(n + 1)*(7*n + 11)/6.at n=40A255687
• Starts of runs of 3 consecutive lazy-tribonacci-Niven numbers (A352107).at n=9A352109
• G.f. A(x) satisfies 5*x = Sum_{n=-oo..+oo} (-1)^n * x^(5*n) * (A(x) + x^n)^(5*n) with A(0) = 1.at n=8A380683