20488

Appears in sequences

• Number of strict 3rd-order maximal independent sets in path graph.at n=46A007384
• Numbers k such that the continued fraction for sqrt(k) has even period and if the last term of the periodic part is deleted the central term is 71.at n=35A031569
• Number of planar n X n X n binary triangular grids symmetric both under 120 degree rotation and reflection with no more than 6 ones in any 5 X 5 X 5 subtriangle.at n=13A153952
• Number of nondecreasing arrangements of n numbers in -3..3 with sum zero and sum of squares less than n*12/3.at n=29A183929
• Triangular array: the fission of ((x+1)^n) by ((2x+1)^n).at n=41A193858
• Mirror of the triangle A193858.at n=39A193859
• Number of binary words of length n such that there is at least one 0 and every run of consecutive 0's is of length >= 4.at n=25A209231
• Partial sums of A073602.at n=44A259035
• Numbers n such that Bernoulli number B_{n} has denominator 1590.at n=32A272140