251658240

Appears in sequences

• First differences of A045623.at n=26A045891
• Eighth column of triangle A067402.at n=5A067408
• Inverse binary transform of A027656.at n=26A081037
• Expansion of g.f. (1-x)/(1-16*x).at n=7A090411
• a(n) = smallest positive number that occurs exactly n times as a difference between two positive squares.at n=45A094191
• a(n) = 15*2^n.at n=24A110286
• Numbers of isomers of unbranched a-4-catapolypentagons - see Brunvoll reference for precise definition.at n=27A121133
• Numbers of polypentagons with two connected internal vertices (see Cyvin et al. for precise definition).at n=27A122742
• a(n) = (n^3 - n^2)*2^n.at n=15A128985
• a(n) = binomial(n+3, 3)*8^n.at n=7A140802
• Denominator of Bernoulli(n, 1/8).at n=8A158654
• a(n) = n^7 - n^6.at n=16A240930
• Number of n X 1 0..4 arrays with some element plus some horizontally, diagonally, antidiagonally or vertically adjacent neighbor totalling four exactly once.at n=12A269822
• Numbers of the form 4^k*(8*j+7) that have exactly three partitions into four positive squares.at n=37A274642
• Decimal representation of the diagonal from the origin to the corner of the n-th stage of growth of the two-dimensional cellular automaton defined by "Rule 294", based on the 5-celled von Neumann neighborhood.at n=27A287506
• a(n) = denominator(Bernoulli(n, x/2) - Bernoulli(n)).at n=24A287705
• a(n) = denominator(Bernoulli(n, x) - Bernoulli(n, 1/2)).at n=24A290645
• 30*a(n) - 1 is the least prime of the form 2^r*3^s*5^t - 1, r > 0, s > 0, t > 0, r + s + t = n.at n=26A337881
• a(n) is the index of the smallest n-gonal number with exactly n prime factors (counted with multiplicity).at n=31A359014