21233

Appears in sequences

• arcsin(arcsinh(x)*cos(x))=x-3/3!*x^3-7/5!*x^5+133/7!*x^7+21233/9!*x^9...at n=4A012636
• Number of walks within N^3 (the first octant of Z^3) starting at (0,0,0) and consisting of n steps taken from {(-1, -1, 0), (-1, 1, 1), (0, 0, 1), (1, 0, -1), (1, 1, -1)}.at n=9A148854
• Smallest numbers containing exactly n smaller numbers when written as English number names.at n=19A159453
• Numbers k such that the digit sum of 167^k is divisible by k.at n=35A175552
• Number of ordered triples (w,x,y) with all terms in {1,...,n} and 2*w^2 < x^2 + y^2.at n=33A211800
• G.f.: Sum_{n>=0} (1 + x*(1+x)^n)^n * x^n.at n=11A337721