31472

Appears in sequences

• Expansion of e.g.f.: sech(cosh(x)*log(x+1))=1-1/2!*x^2+3/3!*x^3-18/4!*x^4+60/5!*x^5...at n=8A012763
• a(n) = T(n,m) + T(n,m+1) + ... + T(n,n), m=[ (n+1)/2 ], T given by A026769.at n=15A026891
• a(n+1) = Sum_{k=0..floor(n/5)} a(k) * a(n-k).at n=22A030036
• Number of basis partitions of n+100 with Durfee square size 10.at n=26A069253
• G.f.: Product_{n=-oo..+oo} (1 + x^n*(1 + x^n)^n).at n=26A293603