37540

Appears in sequences

• T(n,n-5), array T as in A038792.at n=22A038795
• Triangle T(n,k) of the number of strongly connected digraphs on n labeled nodes and with k arcs, k=0..n*(n-1).at n=38A057273
• Numbers which are the sum of their proper divisors containing the digit 8.at n=25A059467
• Number of walks within N^2 (the first quadrant of Z^2) starting and ending at (0,0) and consisting of 2 n steps taken from {(-1, -1), (-1, 0), (-1, 1), (1, -1), (1, 0)}.at n=6A151344
• Numbers n such that there is no square n-gonal number greater than 1.at n=33A188896
• Number of 2 X 2 matrices having all terms in {-n,...,0,..,n} and positive even determinant.at n=8A211157
• Absolute discriminants of complex quadratic fields with 3-class group of type (3,3), 3-principalization type (4443), IPAD [(3,3,3)^3, (3,9)], and Hilbert 3-class field tower of unknown length at least 3.at n=8A242873
• Number of ways to place 3 points on an n X n X n triangular grid so that no pair of them has distance sqrt(3).at n=9A244501
• Absolute discriminants of complex quadratic fields with 3-class group of type (3,3) whose second 3-class group is located on the sporadic part of the coclass graph G(3,2) outside of coclass trees.at n=31A247691
• Partial sums of the number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 467", based on the 5-celled von Neumann neighborhood.at n=37A272320
• Numbers k such that 7*10^k + 79 is prime.at n=27A282250
• Number of meanders of length n with Motzkin-steps avoiding the consecutive steps HH and DU.at n=14A329668
• Number of integer compositions of n with integer geometric mean.at n=27A357710
• Expansion of 1/( (1 + x)^2 * (1 - x^2*(1 + x)^2) ).at n=26A375373
• Number of vertex-transitive graphs with n vertices that are not circulant.at n=29A389815
• a(n) = Sum_{k=0..n} binomial(4*n+k+2,n-k).at n=5A390335