155029

Appears in sequences

• Expansion of 1/((1-x)(1-6x)(1-11x)(1-12x)).at n=4A024436
• a(n) is the least k such that A261865(k) = A005117(n).at n=31A262036
• Expansion of (1/(1 - x))*Sum_{k>=0} k!*x^(k*(k+1)/2)/Product_{j=1..k} (1 - x^j).at n=30A303664