42883

Appears in sequences

• Heptagonal (or 7-gonal) pyramidal numbers: a(n) = n*(n+1)*(5*n-2)/6.at n=37A002413
• Structured disdyakis dodecahedral numbers (vertex structure 9).at n=18A100161
• Number of nX4 binary matrices with no initial bit string in any row or column divisible by 6.at n=7A181038
• T(n,k)=Number of nXk binary matrices with no initial bit string in any row or column divisible by 6.at n=58A181039
• T(n,k)=Number of nXk binary matrices with no initial bit string in any row or column divisible by 6.at n=62A181039
• Number of n X (n+4) binary matrices with no initial bit string in any row or column divisible by 6.at n=3A181043
• E.g.f. exp(x*(1+log(1+x))/(1-log(1+x))).at n=7A199480
• Odd heptagonal pyramidal numbers.at n=9A218324
• Partial sums of the number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 427", based on the 5-celled von Neumann neighborhood.at n=38A271904