33363

Appears in sequences

• Numbers having four 3's in base 10.at n=23A043504
• Starting positions of strings of three 6's in the decimal expansion of Pi.at n=28A083625
• Numbers k such that the k-th triangular number contains only digits {1,5,6}.at n=30A119133
• Volume of Johnson square pyramid placed upright on cube (rounded down) with edge lengths equal to n.at n=29A227221
• Expansion of Sum_{i>=1} x^(i*(i+1)/2) / (1 - Sum_{j>=1} x^(j*(j+1)/2))^2.at n=19A281810
• Numbers n with digits 3 and 6 only.at n=32A284633
• G.f.: 1 + Sum_{n>=1} a(n)*x^n/(1 - x^n) = 1/(1 - x/(1 - x^2/(1 - x^3/(1 - x^4/(1 - ...))))).at n=20A285903