41512

Appears in sequences

• Cycle class sequence c(n) (the number of true cycles of length n in which a certain node is included) for zeolite BOG = Boggsite Na4Ca7[Al18Si78O192].74H2O starting with a T4 atom.at n=14A019080
• Expansion of g.f. (3-4*x-sqrt(1-4*x^2))/(2*(1-2*x)^2).at n=13A182555
• G.f.: exp( Sum_{n>=1} A068963(n)*x^n/n ) where A068963(n) = Sum_{d|n} phi(d^3).at n=14A226106
• Number of n X 2 0,1 arrays indicating 2 X 2 subblocks of some larger (n+1) X 3 binary array having a sum of zero, with rows and columns of the latter in lexicographically nondecreasing order.at n=31A227121
• Numbers k such that k + (sum of digits of k) and k + (product of digits of k) contain the same distinct digits of k.at n=26A248718
• Expansion of e.g.f. exp(C(x)^2 - 1) where C(x) = 1 + x*C(x)^2 is the g.f. of the Catalan numbers, A000108.at n=5A250916
• Number of nX4 0..1 arrays with every element equal to 1, 2 or 3 king-move adjacent elements, with upper left element zero.at n=7A297819
• Expansion of e.g.f. (1/x) * Series_Reversion( x/(1 + x*exp(x))^4 ).at n=4A377630